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Speech Learning & Safety Audio Samples
Deterministic synthetic WAV inputs for pronunciation comparison, dictation preflight, alert degradation, and voice privacy tools.
Samples
Entries inside this sample collection
Pronunciation reference
Three-part reference acoustic phrase.
Difficulty
2/10
Estimated time
1 min
Tags
audio, synthetic, speech-testing, pronunciation-reference
- format
- WAV PCM s16le
- sampleRate
- 16 kHz
- channels
- Mono
- generatedWith
- FFmpeg lavfi
Similar learner pronunciation
Similar rhythm with a slightly shifted pitch contour.
Difficulty
2/10
Estimated time
1 min
Tags
audio, synthetic, speech-testing, pronunciation-learner
- format
- WAV PCM s16le
- sampleRate
- 16 kHz
- channels
- Mono
- generatedWith
- FFmpeg lavfi
Mismatched pronunciation
Deliberately different rhythm and speech-band spectrum.
Difficulty
2/10
Estimated time
1 min
Tags
audio, synthetic, speech-testing, pronunciation-mismatch
- format
- WAV PCM s16le
- sampleRate
- 16 kHz
- channels
- Mono
- generatedWith
- FFmpeg lavfi
Clean dictation input
Clean 16 kHz mono input for a ready preflight result.
Difficulty
2/10
Estimated time
1 min
Tags
audio, synthetic, speech-testing, dictation-clean
- format
- WAV PCM s16le
- sampleRate
- 16 kHz
- channels
- Mono
- generatedWith
- FFmpeg lavfi
Poor dictation input
Noisy 8 kHz stereo input for a warning result.
Difficulty
3/10
Estimated time
1 min
Tags
audio, synthetic, speech-testing, dictation-poor
- format
- WAV PCM s16le
- sampleRate
- 8 kHz
- channels
- Stereo
- generatedWith
- FFmpeg lavfi
Emergency alert input
Four-part alert-like input for degradation simulation.
Difficulty
2/10
Estimated time
1 min
Tags
audio, synthetic, speech-testing, emergency-alert
- format
- WAV PCM s16le
- sampleRate
- 16 kHz
- channels
- Mono
- generatedWith
- FFmpeg lavfi
Voice privacy input
Harmonic 48 kHz mono voice proxy for pitch/formant transformation.
Difficulty
2/10
Estimated time
1 min
Tags
audio, synthetic, speech-testing, privacy-voice
- format
- WAV PCM s16le
- sampleRate
- 48 kHz
- channels
- Mono
- generatedWith
- FFmpeg lavfi
No-speech input
16 kHz silence used to verify business rejection when no speech-range activity is present.
Difficulty
2/10
Estimated time
1 min
Tags
audio, synthetic, speech-testing, no-speech
- format
- WAV PCM s16le
- sampleRate
- 16 kHz
- channels
- Mono
- generatedWith
- FFmpeg lavfi
Tools
Tools frequently paired with this sample
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