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Speech Coder Audio Examples

Speech coder audio examples are provided for each narrowband speech coder. (G.722 examples are found under wideband speech coder audio examples.)

ITU Speech Coders

• Reference PCM sample file
• G.711 A-law encoded
• G.711 μ-law encoded
• G.723.1 5.3k bps
• G.723.1 6.4k bps
• G.726 16k bps
• G.726 24k bps
• G.726 32k bps
• G.726 40k bps
• G.729 8k bps
• G.729A 8k bps

GSM Speech Coders

• Reference PCM sample file
• GSM FR 13k bps
• GSM EFR 12.2k bps
• GSM AMR 4.75k bps
• GSM AMR 5.15k bps
• GSM AMR 5.9k bps
• GSM AMR 6.7k bps
• GSM AMR 7.4k bps
• GSM AMR 7.95k bps
• GSM AMR 10.2k bps
• GSM AMR 12.2k bps

Other Speech Coders

• Reference PCM sample file
• iLBC 13.33k bps (30ms)
• iLBC 15.2k bps (20ms)
• MELPe 600 bps
• MELP 1200 bps
• MELP 2400 bps
• Speex 2.15k bps (8kHz)
• Speex 3.95k bps (8kHz)
• Speex 5.95k bps (8kHz)
• Speex 8k bps (8kHz)
• Speex 11k bps (8kHz)
• Speex 15k bps (8kHz)
• Speex 18.2k bps (8kHz)
• Speex 24.6k bps (8kHz)