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MPEG Audio FAQ: MPEG-4
https://sound.media.mit.edu/resources/mpeg4/audio/faq/mpeg4.html#:~:text=The%20CELP%20speech%20coding%20algorithm%20in%20MPEG-4%20can,CELP%2C%20the%20latter%20one%20as%20Wideband%20%28WB%29%20CELP.
MPEG-4 - Wikipedia
https://en.wikipedia.org/wiki/MPEG-4
Audio | MPEG
https://mpeg.chiariglione.org/standards/mpeg-4/audio
Typically, the average bit-rate is about 768 kbps for stereo audio at 48 kHz / 16 bit (2:1 compression on average, depending on the input signal). For higher resolutions (sampling rates and word length) this bit rate increases up to about 4000 kbps stereo for 192 kHz / 24 bit signals.
What are the bitrates that are supported by MPEG-4 Visual ...
https://mpeg.chiariglione.org/faq/what-are-bitrates-are-supported-mpeg-4-visual
MPEG-4. Part name: Video. MPEG-4 Video is optimized for : low (<64 kbps), intermediate (64-384kbps), and. high (384-4Mbps) bitrates. It shall support both constant bitrate (CBR) and variable bitrate (VBR). These supported bitrates modes are given by the Requirements Group, and may still change in the future.
A virtual DSP Architecture for MPEG-4 structured Audio
https://www.academia.edu/70393920/A_virtual_DSP_Architecture_for_MPEG_4_structured_Audio
Proceedings of the COST G-6 Conference on Digital Audio Effects (DAFX-00), Verona, Italy, December 7-9, 2000 A VIRTUAL DSP ARCHITECTURE FOR MPEG-4 STRUCTURED AUDIO Giorgio Zoia and Claudio Alberti Integrated Systems Laboratory (ISL/LSI) Swiss Federal Institute of Technology {giorgio.zoia, claudio.alberti}@epfl.ch We present in this paper the design of a …
Audio Samples — Audio Development Framework documentation
https://docs.espressif.com/projects/esp-adf/en/latest/design-guide/audio-samples.html
Sample Rates¶. The files in this section have been prepared by converting a single audio file into different sampling rates defined in MPEG Layer III specification. Both mono and stereo versions of files are provided. The bit depth of files is 16 bits. Playlist containing all above files: ff …
audio recording - Android MediaRecorder Sampling Rate …
https://stackoverflow.com/questions/29058346/android-mediarecorder-sampling-rate-and-noise
I have an issue using Android's MediaRecorder to record sound from microphone to .m4a files (AAC-LC, MPEG-4 container). Starting from API level 18, the default sampling rate drops from 44.1 or 48 kHz (depending on device) to only 8 Hz.
Digital Audio Basics: Audio Sample Rate and Bit Depth
https://www.izotope.com/en/learn/digital-audio-basics-sample-rate-and-bit-depth.html
The sample rate of 44.1 kHz technically allows for audio at frequencies up to 22.05 kHz to be recorded. By placing the Nyquist frequency outside of our hearing range, we can use more moderate filters to eliminate aliasing without much audible effect. Other audio sample rates: 48 kHz, 88.2 kHz, 96 kHz, etc.
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