| Audio Post-Processing | Company |
|---|---|
Audio enhancements such as Reverberation | Alango Technologies Arkamys Dolby Labs Inc Ittiam Systems QSoundLabs SPIRIT DSP SRS Labs AM3D |
Audio post-processing such as Graphics Equalization | Aricent Group Arkamys Dolby Labs Inc Ittiam Systems QSoundLabs SPIRIT DSP SRS Labs AM3D |
3D Positional Audio Processing | Arkamys QSoundLabs SRS Labs AM3D |
| Speech Codecs and Enhancements | Company |
|---|---|
| ITU Standards ( G.7xx ) | CouthIT D2 technologiesESPICO Floreat, Inc. GAO Research HelloSoft Ittiam Systems SPIRIT DSP Tata Elxsi VoiceAge |
| GSM AMR Standards | CouthIT ESPICO Floreat, Inc. GAO Research HelloSoft Ittiam Systems SPIRIT DSP Tata Elxsi VisualOn VoiceAge |
| Speech Enhancements such as Echo Cancellation | Alango Technologies CouthIT D2 technologies Floreat, Inc. Fraunhofer IIS GAO Research HelloSoft Ittiam Systems QSoundLabs SPIRIT DSP SRS Labs VoiceAge bdSoundVisual Signal |