CodecCodec2.h File Reference

Codec2 Codec using https://github.com/pschatzmann/arduino-codec2 The codec was developed by David Grant Rowe, with support and cooperation of other researchers (e.g., Jean-Marc Valin from Opus). Codec 2 consists of 3200, 2400, 1600, 1400, 1300, 1200, 700 and 450 bit/s codec modes. It outperforms most other low-bitrate speech codecs. For example, it uses half the bandwidth of Advanced Multi-Band Excitation to encode speech with similar quality. The speech codec uses 16-bit PCM sampled audio, and outputs packed digital bytes. When sent packed digital bytes, it outputs PCM sampled audio. The audio sample rate is fixed at 8 kHz. More...

#include "AudioCodecs/AudioEncoded.h"
#include "codec2.h"

Go to the source code of this file.

Classes
class	Codec2Decoder
	Decoder for Codec2. Depends on https://github.com/pschatzmann/arduino-libcodec2. More...
class	Codec2Encoder
	Encoder for Codec2 - Depends on https://github.com/pschatzmann/arduino-libcodec2. More...

Namespaces
	audio_tools
	Generic Implementation of sound input and output for desktop environments using portaudio.

Functions
int	getCodec2Mode (int bits_per_second)
	Convert bits per sample to Codec2 mode.

Detailed Description

Codec2 Codec using https://github.com/pschatzmann/arduino-codec2 The codec was developed by David Grant Rowe, with support and cooperation of other researchers (e.g., Jean-Marc Valin from Opus). Codec 2 consists of 3200, 2400, 1600, 1400, 1300, 1200, 700 and 450 bit/s codec modes. It outperforms most other low-bitrate speech codecs. For example, it uses half the bandwidth of Advanced Multi-Band Excitation to encode speech with similar quality. The speech codec uses 16-bit PCM sampled audio, and outputs packed digital bytes. When sent packed digital bytes, it outputs PCM sampled audio. The audio sample rate is fixed at 8 kHz.

Author

Phil Schatzmann

Version

0.1

Date

2022-04-24