-
What is Digital Audio?
Get your FREE course here: https://bit.ly/3YF1QZC
Do you want to learn about making music?
START HERE with understanding what digital audio ACTUALLY is, a sample lesson from the completely free Music Production for Beginners - Getting Started course.
Meet Rob Jones founder and senior tutor at Producertech. He's spent most of his life teaching people everything there is to know about music production from complete beginners to superstar DJ's and professionals.
We think we've created the ultimate music production for begineers course and, it's absolutely free! It tells you everything you need to know to start your journey. Simply click the link https://bit.ly/3YF1QZC , apply the voucher and you'll have access to our Music Production for Beginners - Getting Started course FREE for life.
...
published: 22 Dec 2022
-
Digital Audio Explained
Why increasing the sample rate and bit depth improves the digital representation of the analog sound wave.
published: 17 Oct 2011
-
Digital Audio Explained
This computer science lesson describes how sound is digitally encoded and stored by a computer. It begins with a discussion of the nature of sound in air, namely, a longitudinal wave of compressions and rarefactions. It then explains how sound can be captured by a dynamic microphone, which generates an analogue electrical signal that represents the original analogue sound wave. The digitisation of sound is then described, a process known as analogue to digital conversion. The effect of the sample rate on the quality of a digital sound recording is illustrated, as well as its effect on the size of the sound file. The importance of the bit depth used to digitise a sound wave is also covered, along with the impact of quantisation errors that might result from a low bit depth. This video...
published: 10 Oct 2021
-
How Digital Audio Works - Computerphile
Learn how to add narration to your Kindle eBooks. Visit http://www.amazon.com/computerphile
How does digital audio work? Programmer, Producer and Professional Musician David Domminney Fowler takes us through the basics.
Science of Drumming - Sixty Symbols: https://youtu.be/GyLeBMdI_HU
Captain Buzz: Smartphone Pilot: https://youtu.be/DE5e0C7xw7c
Factory of Ideas (Bell Labs): https://youtu.be/QFK6RG47bww
Could we Ban Encryption?: https://youtu.be/ShUyfk4QB-8
Computer that Changed Everything: https://youtu.be/6LYRgrqJgDc
http://www.facebook.com/computerphile
https://twitter.com/computer_phile
This video was filmed and edited by Sean Riley.
Computer Science at the University of Nottingham: http://bit.ly/nottscomputer
Computerphile is a sister project to Brady Haran's Numberphile. M...
published: 26 Oct 2015
-
What is digital audio?
An introductory video to our video playlist on digital audio concepts for the project and home recording studio owner.
published: 16 Dec 2016
-
Debunking the Digital Audio Myth: The Truth About the 'Stair-Step' Effect
Learn why 16-bit/44.1kHz audio is just as good as high-res audio formats for playback (if not better)!
Watch Part 2: https://youtu.be/VSm_7q3Ol04
Watch Monty's full video here: https://youtu.be/UqiBJbREUgU
Original Video: https://xiph.org/video/vid2.shtml
Learn More: https://people.xiph.org/~xiphmont/demo/neil-young.html
"Digital Show & Tell" is distributed under a Creative Commons Attribution-ShareAlike (BY-SA) license. Learn more here: https://creativecommons.org/licenses/by-sa/3.0/
This video was originally created by Christopher "Monty" Montgomery and xiph.org. The video has been adapted to make the concepts more accessible to viewers by providing context and commentary throughout the video.
Book a one to one call:
https://audiouniversityonline.com/one-to-one/
Website: https:/...
published: 01 Jun 2023
-
Analog vs Digital Audio | The Truth About Which Is Better...
What's the difference between analog and digital audio? Is vinyl better than CD or MP3? What makes one better than the other? In this video, you'll learn about the benefits and drawbacks of analog and digital audio. By the end, you'll be able to answer these questions for yourself.
Full Post (Audio University Website): https://audiouniversityonline.com/analog-vs-digital-audio/
Videos Mentioned In This Video:
- D/A and A/D | Digital Show and Tell - Monty Montgomery (xiph.org) - https://www.youtube.com/watch?v=cIQ9IXSUzuM
- Samplerates: the higher the better, right? - Dan Worrall (FabFilter YouTube Channel) - https://www.youtube.com/watch?v=-jCwIsT0X8M
- Lossy vs Lossless Audio - Audio University - https://www.youtube.com/watch?v=NJu8a6itxo4
Download the free Speaker Placement Guide here:...
published: 19 Aug 2021
-
Digital Audio: The Very Basics
Ever wonder why some digital audio files sound really detailed and clear while others don't? Confused about what FLAC is and why it's better than MP3? This video will help you understand.
⁂ Interested in licensing these videos for institutional or corporate use? Get in touch at [email protected] or visit us at flikli.com!
published: 22 Sep 2015
-
Bangbung Hideung - Buah Kawung Gopar !! Audio Jaipong Agus Group Subang
Jaipong versi kaset pita audio dikonversi ke digital audio lingkung seni Agus Group Mekar Rahayu Subang.
Sampul kaset album Bangbung hideung.
Kawih :
1. Bangbung Hideung
2. Buah Kawung Gopar
Pesinden : Cicih Saeran
Asuhan : Raida, Oon Sariningsih (Garuda Ngupuk)
#jaipongansunda
#jaipongsubang
#senisunda
#senisundajaipong
#subang
published: 04 Sep 2024
-
But what is digital audio? (The FLAC Codec #1 – (Digital) Audio and PCM)
Episode 1 of the deep-dive series into FLAC, digital audio and its lossless compression.
Manim source code for the series: https://github.com/kleinesfilmroellchen/flac-video-resources
The FLAC specification: https://www.xiph.org/flac/format.html (Official Specification) https://datatracker.ietf.org/doc/html/draft-ietf-cellar-flac (Internet Draft as of January 2022; mostly a copy of the specification + corrections)
SerenityOS: https://serenityos.org
95% of this video was created with the Manim animation tool, created by Grant Sanderson (3Blue1Brown) and supported by the Manim community. https://www.manim.community/
TV news: tagesschau 1960/11/16, 8 pm (https://www.tagesschau.de/multimedia/video/video1213658.html )
Concert recording: Carlos Kleiber - Beethoven symphony No.7, Op.92: mov.4 (h...
published: 21 Jan 2022
6:13
What is Digital Audio?
Get your FREE course here: https://bit.ly/3YF1QZC
Do you want to learn about making music?
START HERE with understanding what digital audio ACTUALLY is, a sa...
Get your FREE course here: https://bit.ly/3YF1QZC
Do you want to learn about making music?
START HERE with understanding what digital audio ACTUALLY is, a sample lesson from the completely free Music Production for Beginners - Getting Started course.
Meet Rob Jones founder and senior tutor at Producertech. He's spent most of his life teaching people everything there is to know about music production from complete beginners to superstar DJ's and professionals.
We think we've created the ultimate music production for begineers course and, it's absolutely free! It tells you everything you need to know to start your journey. Simply click the link https://bit.ly/3YF1QZC , apply the voucher and you'll have access to our Music Production for Beginners - Getting Started course FREE for life.
Discover your potential and live out your music producer dreams!
ABOUT PRODUCERTECH
Producertech first formed in 2009 with the launch of our first website Live Courses, featuring Ableton Live courses by certified trainer Rob Jones. After many subsequent websites and courses, we now have a single online school with a wide range of titles on most major software and areas of music production. Our mission is to deliver high quality and easy to follow tutorials that teach how to make electronic music in any style, brought to you by the best producers and instructors from around the world.
CONNECT WITH US
Facebook: https://www.facebook.com/Producertech...
Instagram: https://www.instagram.com/producertech/
Twitter: https://twitter.com/Producertech
Website: https://www.producertech.com/
https://wn.com/What_Is_Digital_Audio
Get your FREE course here: https://bit.ly/3YF1QZC
Do you want to learn about making music?
START HERE with understanding what digital audio ACTUALLY is, a sample lesson from the completely free Music Production for Beginners - Getting Started course.
Meet Rob Jones founder and senior tutor at Producertech. He's spent most of his life teaching people everything there is to know about music production from complete beginners to superstar DJ's and professionals.
We think we've created the ultimate music production for begineers course and, it's absolutely free! It tells you everything you need to know to start your journey. Simply click the link https://bit.ly/3YF1QZC , apply the voucher and you'll have access to our Music Production for Beginners - Getting Started course FREE for life.
Discover your potential and live out your music producer dreams!
ABOUT PRODUCERTECH
Producertech first formed in 2009 with the launch of our first website Live Courses, featuring Ableton Live courses by certified trainer Rob Jones. After many subsequent websites and courses, we now have a single online school with a wide range of titles on most major software and areas of music production. Our mission is to deliver high quality and easy to follow tutorials that teach how to make electronic music in any style, brought to you by the best producers and instructors from around the world.
CONNECT WITH US
Facebook: https://www.facebook.com/Producertech...
Instagram: https://www.instagram.com/producertech/
Twitter: https://twitter.com/Producertech
Website: https://www.producertech.com/
- published: 22 Dec 2022
- views: 4447
1:30
Digital Audio Explained
Why increasing the sample rate and bit depth improves the digital representation of the analog sound wave.
Why increasing the sample rate and bit depth improves the digital representation of the analog sound wave.
https://wn.com/Digital_Audio_Explained
Why increasing the sample rate and bit depth improves the digital representation of the analog sound wave.
- published: 17 Oct 2011
- views: 90709
12:36
Digital Audio Explained
This computer science lesson describes how sound is digitally encoded and stored by a computer. It begins with a discussion of the nature of sound in air, name...
This computer science lesson describes how sound is digitally encoded and stored by a computer. It begins with a discussion of the nature of sound in air, namely, a longitudinal wave of compressions and rarefactions. It then explains how sound can be captured by a dynamic microphone, which generates an analogue electrical signal that represents the original analogue sound wave. The digitisation of sound is then described, a process known as analogue to digital conversion. The effect of the sample rate on the quality of a digital sound recording is illustrated, as well as its effect on the size of the sound file. The importance of the bit depth used to digitise a sound wave is also covered, along with the impact of quantisation errors that might result from a low bit depth. This video tutorial mentions some typical sample rates such as speech quality (8KHz) which is used by VIOP applications and telephone voice calls, and CD quality (44.1 KHz) which is used for music recordings. The video concludes with a mention of some different audio file formats including wrappers for uncompressed LPCM data (linear pulse code modulation) such as .WAV and .AIFF, and some compressed audio file formats such as MP3, WMA and M4A.
Chapters:
00:00 The nature of sound
01:22 A microphone to capture sound
01:50 Representing sound with a transverse wave
03:12 Sample rate
07:47 Bit depth
09:51 Summary
https://wn.com/Digital_Audio_Explained
This computer science lesson describes how sound is digitally encoded and stored by a computer. It begins with a discussion of the nature of sound in air, namely, a longitudinal wave of compressions and rarefactions. It then explains how sound can be captured by a dynamic microphone, which generates an analogue electrical signal that represents the original analogue sound wave. The digitisation of sound is then described, a process known as analogue to digital conversion. The effect of the sample rate on the quality of a digital sound recording is illustrated, as well as its effect on the size of the sound file. The importance of the bit depth used to digitise a sound wave is also covered, along with the impact of quantisation errors that might result from a low bit depth. This video tutorial mentions some typical sample rates such as speech quality (8KHz) which is used by VIOP applications and telephone voice calls, and CD quality (44.1 KHz) which is used for music recordings. The video concludes with a mention of some different audio file formats including wrappers for uncompressed LPCM data (linear pulse code modulation) such as .WAV and .AIFF, and some compressed audio file formats such as MP3, WMA and M4A.
Chapters:
00:00 The nature of sound
01:22 A microphone to capture sound
01:50 Representing sound with a transverse wave
03:12 Sample rate
07:47 Bit depth
09:51 Summary
- published: 10 Oct 2021
- views: 22628
12:25
How Digital Audio Works - Computerphile
Learn how to add narration to your Kindle eBooks. Visit http://www.amazon.com/computerphile
How does digital audio work? Programmer, Producer and Professional ...
Learn how to add narration to your Kindle eBooks. Visit http://www.amazon.com/computerphile
How does digital audio work? Programmer, Producer and Professional Musician David Domminney Fowler takes us through the basics.
Science of Drumming - Sixty Symbols: https://youtu.be/GyLeBMdI_HU
Captain Buzz: Smartphone Pilot: https://youtu.be/DE5e0C7xw7c
Factory of Ideas (Bell Labs): https://youtu.be/QFK6RG47bww
Could we Ban Encryption?: https://youtu.be/ShUyfk4QB-8
Computer that Changed Everything: https://youtu.be/6LYRgrqJgDc
http://www.facebook.com/computerphile
https://twitter.com/computer_phile
This video was filmed and edited by Sean Riley.
Computer Science at the University of Nottingham: http://bit.ly/nottscomputer
Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
https://wn.com/How_Digital_Audio_Works_Computerphile
Learn how to add narration to your Kindle eBooks. Visit http://www.amazon.com/computerphile
How does digital audio work? Programmer, Producer and Professional Musician David Domminney Fowler takes us through the basics.
Science of Drumming - Sixty Symbols: https://youtu.be/GyLeBMdI_HU
Captain Buzz: Smartphone Pilot: https://youtu.be/DE5e0C7xw7c
Factory of Ideas (Bell Labs): https://youtu.be/QFK6RG47bww
Could we Ban Encryption?: https://youtu.be/ShUyfk4QB-8
Computer that Changed Everything: https://youtu.be/6LYRgrqJgDc
http://www.facebook.com/computerphile
https://twitter.com/computer_phile
This video was filmed and edited by Sean Riley.
Computer Science at the University of Nottingham: http://bit.ly/nottscomputer
Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
- published: 26 Oct 2015
- views: 262734
5:06
What is digital audio?
An introductory video to our video playlist on digital audio concepts for the project and home recording studio owner.
An introductory video to our video playlist on digital audio concepts for the project and home recording studio owner.
https://wn.com/What_Is_Digital_Audio
An introductory video to our video playlist on digital audio concepts for the project and home recording studio owner.
- published: 16 Dec 2016
- views: 15684
13:17
Debunking the Digital Audio Myth: The Truth About the 'Stair-Step' Effect
Learn why 16-bit/44.1kHz audio is just as good as high-res audio formats for playback (if not better)!
Watch Part 2: https://youtu.be/VSm_7q3Ol04
Watch Monty...
Learn why 16-bit/44.1kHz audio is just as good as high-res audio formats for playback (if not better)!
Watch Part 2: https://youtu.be/VSm_7q3Ol04
Watch Monty's full video here: https://youtu.be/UqiBJbREUgU
Original Video: https://xiph.org/video/vid2.shtml
Learn More: https://people.xiph.org/~xiphmont/demo/neil-young.html
"Digital Show & Tell" is distributed under a Creative Commons Attribution-ShareAlike (BY-SA) license. Learn more here: https://creativecommons.org/licenses/by-sa/3.0/
This video was originally created by Christopher "Monty" Montgomery and xiph.org. The video has been adapted to make the concepts more accessible to viewers by providing context and commentary throughout the video.
Book a one to one call:
https://audiouniversityonline.com/one-to-one/
Website: https://audiouniversityonline.com/
Facebook: https://www.facebook.com/AudioUniversityOnline/
Twitter: https://twitter.com/audiouniversity
Instagram: https://www.instagram.com/audiouniversity/
Patreon: https://www.patreon.com/audiouniversity
#AudioUniversity
Disclaimer: This description contains affiliate links, which means that if you click them, I will receive a small commission at no cost to you.
https://wn.com/Debunking_The_Digital_Audio_Myth_The_Truth_About_The_'Stair_Step'_Effect
Learn why 16-bit/44.1kHz audio is just as good as high-res audio formats for playback (if not better)!
Watch Part 2: https://youtu.be/VSm_7q3Ol04
Watch Monty's full video here: https://youtu.be/UqiBJbREUgU
Original Video: https://xiph.org/video/vid2.shtml
Learn More: https://people.xiph.org/~xiphmont/demo/neil-young.html
"Digital Show & Tell" is distributed under a Creative Commons Attribution-ShareAlike (BY-SA) license. Learn more here: https://creativecommons.org/licenses/by-sa/3.0/
This video was originally created by Christopher "Monty" Montgomery and xiph.org. The video has been adapted to make the concepts more accessible to viewers by providing context and commentary throughout the video.
Book a one to one call:
https://audiouniversityonline.com/one-to-one/
Website: https://audiouniversityonline.com/
Facebook: https://www.facebook.com/AudioUniversityOnline/
Twitter: https://twitter.com/audiouniversity
Instagram: https://www.instagram.com/audiouniversity/
Patreon: https://www.patreon.com/audiouniversity
#AudioUniversity
Disclaimer: This description contains affiliate links, which means that if you click them, I will receive a small commission at no cost to you.
- published: 01 Jun 2023
- views: 561388
14:20
Analog vs Digital Audio | The Truth About Which Is Better...
What's the difference between analog and digital audio? Is vinyl better than CD or MP3? What makes one better than the other? In this video, you'll learn about ...
What's the difference between analog and digital audio? Is vinyl better than CD or MP3? What makes one better than the other? In this video, you'll learn about the benefits and drawbacks of analog and digital audio. By the end, you'll be able to answer these questions for yourself.
Full Post (Audio University Website): https://audiouniversityonline.com/analog-vs-digital-audio/
Videos Mentioned In This Video:
- D/A and A/D | Digital Show and Tell - Monty Montgomery (xiph.org) - https://www.youtube.com/watch?v=cIQ9IXSUzuM
- Samplerates: the higher the better, right? - Dan Worrall (FabFilter YouTube Channel) - https://www.youtube.com/watch?v=-jCwIsT0X8M
- Lossy vs Lossless Audio - Audio University - https://www.youtube.com/watch?v=NJu8a6itxo4
Download the free Speaker Placement Guide here: https://audiouniversityonline.com/speaker-placement-guide/
00:00 - Intro
00:14 - Analog Audio Explained
01:24 - Digital Audio Explained
02:55 - Analog vs Digital Audio: Pros & Cons
03:19 - Noise
04:30 - Fidelity
07:50 - Aliasing
08:55 - Harmonic Distortion & Non-Linearity
10:52 - Production & Editing
12:33 - Portability & Durability
13:36 - (Free) Speaker Placement Guide
14:08 - Subscribe To Audio University!
Book a one to one call:
https://audiouniversityonline.com/one-to-one/
Website: https://audiouniversityonline.com/
Facebook: https://www.facebook.com/AudioUniversityOnline/
Twitter: https://twitter.com/audiouniversity
Instagram: https://www.instagram.com/audiouniversity/
Patreon: https://www.patreon.com/audiouniversity
Gear Recommendations: https://kit.co/audiouniversity
#AudioUniversity
Disclaimer: This description contains affiliate links, which means that if you click them, I will receive a small commission at no cost to you.
https://wn.com/Analog_Vs_Digital_Audio_|_The_Truth_About_Which_Is_Better...
What's the difference between analog and digital audio? Is vinyl better than CD or MP3? What makes one better than the other? In this video, you'll learn about the benefits and drawbacks of analog and digital audio. By the end, you'll be able to answer these questions for yourself.
Full Post (Audio University Website): https://audiouniversityonline.com/analog-vs-digital-audio/
Videos Mentioned In This Video:
- D/A and A/D | Digital Show and Tell - Monty Montgomery (xiph.org) - https://www.youtube.com/watch?v=cIQ9IXSUzuM
- Samplerates: the higher the better, right? - Dan Worrall (FabFilter YouTube Channel) - https://www.youtube.com/watch?v=-jCwIsT0X8M
- Lossy vs Lossless Audio - Audio University - https://www.youtube.com/watch?v=NJu8a6itxo4
Download the free Speaker Placement Guide here: https://audiouniversityonline.com/speaker-placement-guide/
00:00 - Intro
00:14 - Analog Audio Explained
01:24 - Digital Audio Explained
02:55 - Analog vs Digital Audio: Pros & Cons
03:19 - Noise
04:30 - Fidelity
07:50 - Aliasing
08:55 - Harmonic Distortion & Non-Linearity
10:52 - Production & Editing
12:33 - Portability & Durability
13:36 - (Free) Speaker Placement Guide
14:08 - Subscribe To Audio University!
Book a one to one call:
https://audiouniversityonline.com/one-to-one/
Website: https://audiouniversityonline.com/
Facebook: https://www.facebook.com/AudioUniversityOnline/
Twitter: https://twitter.com/audiouniversity
Instagram: https://www.instagram.com/audiouniversity/
Patreon: https://www.patreon.com/audiouniversity
Gear Recommendations: https://kit.co/audiouniversity
#AudioUniversity
Disclaimer: This description contains affiliate links, which means that if you click them, I will receive a small commission at no cost to you.
- published: 19 Aug 2021
- views: 212652
1:48
Digital Audio: The Very Basics
Ever wonder why some digital audio files sound really detailed and clear while others don't? Confused about what FLAC is and why it's better than MP3? This vide...
Ever wonder why some digital audio files sound really detailed and clear while others don't? Confused about what FLAC is and why it's better than MP3? This video will help you understand.
⁂ Interested in licensing these videos for institutional or corporate use? Get in touch at
[email protected] or visit us at flikli.com!
https://wn.com/Digital_Audio_The_Very_Basics
Ever wonder why some digital audio files sound really detailed and clear while others don't? Confused about what FLAC is and why it's better than MP3? This video will help you understand.
⁂ Interested in licensing these videos for institutional or corporate use? Get in touch at
[email protected] or visit us at flikli.com!
- published: 22 Sep 2015
- views: 3929
21:33
Bangbung Hideung - Buah Kawung Gopar !! Audio Jaipong Agus Group Subang
Jaipong versi kaset pita audio dikonversi ke digital audio lingkung seni Agus Group Mekar Rahayu Subang.
Sampul kaset album Bangbung hideung.
Kawih :
1. Bangbu...
Jaipong versi kaset pita audio dikonversi ke digital audio lingkung seni Agus Group Mekar Rahayu Subang.
Sampul kaset album Bangbung hideung.
Kawih :
1. Bangbung Hideung
2. Buah Kawung Gopar
Pesinden : Cicih Saeran
Asuhan : Raida, Oon Sariningsih (Garuda Ngupuk)
#jaipongansunda
#jaipongsubang
#senisunda
#senisundajaipong
#subang
https://wn.com/Bangbung_Hideung_Buah_Kawung_Gopar_Audio_Jaipong_Agus_Group_Subang
Jaipong versi kaset pita audio dikonversi ke digital audio lingkung seni Agus Group Mekar Rahayu Subang.
Sampul kaset album Bangbung hideung.
Kawih :
1. Bangbung Hideung
2. Buah Kawung Gopar
Pesinden : Cicih Saeran
Asuhan : Raida, Oon Sariningsih (Garuda Ngupuk)
#jaipongansunda
#jaipongsubang
#senisunda
#senisundajaipong
#subang
- published: 04 Sep 2024
- views: 340
11:26
But what is digital audio? (The FLAC Codec #1 – (Digital) Audio and PCM)
Episode 1 of the deep-dive series into FLAC, digital audio and its lossless compression.
Manim source code for the series: https://github.com/kleinesfilmroellc...
Episode 1 of the deep-dive series into FLAC, digital audio and its lossless compression.
Manim source code for the series: https://github.com/kleinesfilmroellchen/flac-video-resources
The FLAC specification: https://www.xiph.org/flac/format.html (Official Specification) https://datatracker.ietf.org/doc/html/draft-ietf-cellar-flac (Internet Draft as of January 2022; mostly a copy of the specification + corrections)
SerenityOS: https://serenityos.org
95% of this video was created with the Manim animation tool, created by Grant Sanderson (3Blue1Brown) and supported by the Manim community. https://www.manim.community/
TV news: tagesschau 1960/11/16, 8 pm (https://www.tagesschau.de/multimedia/video/video1213658.html )
Concert recording: Carlos Kleiber - Beethoven symphony No.7, Op.92: mov.4 (https://www.youtube.com/watch?v=VLkZvsp62iU )
Footnotes (square brackets in the video):
[1] For the purposes of this video a codec is just a file format
[2] CD-Audio is not a real file format, but stands for the encoding used by CD audio discs
[3] OVERSIMPLIFICATION, I know, and also I don’t know shit about ZIP so don’t @ me
[4] http://hyperphysics.phy-astr.gsu.edu/hbase/Sound/intens.html#c3
[5] We could also average the signal over the short time slice instead, there are multiple approaches of best finding a sample value.
[6] Additionally, there needs to be an analog low pass filter (blocking frequencies above some point) that blocks all frequencies above the maximum representable frequency, the “Nyquist limit”. This needs to be in place both before converting the signal to digital and after re-converting it to analog. Otherwise, you get “aliasing”, pseudo-frequency information that isn’t actually there.
[7] It mainly comes down to the fact that analog low pass filters are imperfect, and these frequencies are well-suited for syncing with other data streams, such as standard definition video in the case of 48kHz. For those reasons, we rather choose the sampling rate a bit too high than too low.
[8] Technically, the entire process of digitizing a signal is called quantization, but that’ll get confusing.
[9] We can also use floating-point numbers (basically decimal), but that’s not something FLAC supports and it’s not generally superior to integer sample representation.
[10] This is a simplification and technically wrong. Any range sizes for these values are possible as an amplitude, and there are five differently sized ranges with six numbers. My point still stands: The differences are very hearable.
https://wn.com/But_What_Is_Digital_Audio_(The_Flac_Codec_1_–_(Digital)_Audio_And_Pcm)
Episode 1 of the deep-dive series into FLAC, digital audio and its lossless compression.
Manim source code for the series: https://github.com/kleinesfilmroellchen/flac-video-resources
The FLAC specification: https://www.xiph.org/flac/format.html (Official Specification) https://datatracker.ietf.org/doc/html/draft-ietf-cellar-flac (Internet Draft as of January 2022; mostly a copy of the specification + corrections)
SerenityOS: https://serenityos.org
95% of this video was created with the Manim animation tool, created by Grant Sanderson (3Blue1Brown) and supported by the Manim community. https://www.manim.community/
TV news: tagesschau 1960/11/16, 8 pm (https://www.tagesschau.de/multimedia/video/video1213658.html )
Concert recording: Carlos Kleiber - Beethoven symphony No.7, Op.92: mov.4 (https://www.youtube.com/watch?v=VLkZvsp62iU )
Footnotes (square brackets in the video):
[1] For the purposes of this video a codec is just a file format
[2] CD-Audio is not a real file format, but stands for the encoding used by CD audio discs
[3] OVERSIMPLIFICATION, I know, and also I don’t know shit about ZIP so don’t @ me
[4] http://hyperphysics.phy-astr.gsu.edu/hbase/Sound/intens.html#c3
[5] We could also average the signal over the short time slice instead, there are multiple approaches of best finding a sample value.
[6] Additionally, there needs to be an analog low pass filter (blocking frequencies above some point) that blocks all frequencies above the maximum representable frequency, the “Nyquist limit”. This needs to be in place both before converting the signal to digital and after re-converting it to analog. Otherwise, you get “aliasing”, pseudo-frequency information that isn’t actually there.
[7] It mainly comes down to the fact that analog low pass filters are imperfect, and these frequencies are well-suited for syncing with other data streams, such as standard definition video in the case of 48kHz. For those reasons, we rather choose the sampling rate a bit too high than too low.
[8] Technically, the entire process of digitizing a signal is called quantization, but that’ll get confusing.
[9] We can also use floating-point numbers (basically decimal), but that’s not something FLAC supports and it’s not generally superior to integer sample representation.
[10] This is a simplification and technically wrong. Any range sizes for these values are possible as an amplitude, and there are five differently sized ranges with six numbers. My point still stands: The differences are very hearable.
- published: 21 Jan 2022
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