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Find files, editable templates and browser test targets by what you need to make or test. The directory below is cut by format; the two collections under it cut the same library by subject and by workflow.

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ASR Extra: 8888 Transcript (JSON)

Ground-truth transcript for extra ASR utterance 8888.

File: JSON · Asr
Use case: ASR testingJSON parsing· Conversion set

ASR Extra: 9999 Clean (WAV)

Extra synthetic digit utterance 9999 (nine nine nine nine): clean twin.

File: WAV · Asr · 16000
Use case: ASR testingAudio analysis· Paired fixture

ASR Extra: 9999 Noisy (WAV)

Noisy twin of digit sequence 9999.

File: WAV · Asr · 16000
Use case: ASR testingAudio analysis· Paired fixture

ASR Extra: 9999 Transcript (JSON)

Ground-truth transcript for extra ASR utterance 9999.

File: JSON · Asr
Use case: ASR testingJSON parsing· Conversion set

ASR: 0123 Clean (WAV)

Synthetic clean tone sequence encoding digits 0123 (zero one two three). Pair with the noisy twin and transcript JSON for ASR evaluation.

File: WAV · Asr · 16000
Use case: ASR testingAudio analysis· Paired fixture

ASR: 0123 Noisy (WAV)

Noisy twin of the digit sequence 0123 at ~7 dB SNR. Score ASR against the shared transcript JSON.

File: WAV · Asr · 16000
Use case: ASR testingAudio analysis· Paired fixture

ASR: 0123 Transcript (JSON)

Ground-truth transcript for the 0123 ASR utterance pair, expected text: “zero one two three”.

File: JSON · Asr
Use case: ASR testingJSON parsing· Conversion set

ASR: 1357 Clean (WAV)

Synthetic clean tone sequence encoding digits 1357 (one three five seven). Pair with the noisy twin and transcript JSON for ASR evaluation.

File: WAV · Asr · 16000
Use case: ASR testingAudio analysis· Paired fixture

ASR: 1357 Noisy (WAV)

Noisy twin of the digit sequence 1357 at ~7 dB SNR. Score ASR against the shared transcript JSON.

File: WAV · Asr · 16000
Use case: ASR testingAudio analysis· Paired fixture

ASR: 1357 Transcript (JSON)

Ground-truth transcript for the 1357 ASR utterance pair, expected text: “one three five seven”.

File: JSON · Asr
Use case: ASR testingJSON parsing· Conversion set

ASR: 24680 Clean (WAV)

Synthetic clean tone sequence encoding digits 24680 (two four six eight zero). Pair with the noisy twin and transcript JSON for ASR evaluation.

File: WAV · Asr · 16000
Use case: ASR testingAudio analysis· Paired fixture

ASR: 24680 Noisy (WAV)

Noisy twin of the digit sequence 24680 at ~7 dB SNR. Score ASR against the shared transcript JSON.

File: WAV · Asr · 16000
Use case: ASR testingAudio analysis· Paired fixture

ASR: 24680 Transcript (JSON)

Ground-truth transcript for the 24680 ASR utterance pair, expected text: “two four six eight zero”.

File: JSON · Asr
Use case: ASR testingJSON parsing· Conversion set

ASR: 4567 Clean (WAV)

Synthetic clean tone sequence encoding digits 4567 (four five six seven). Pair with the noisy twin and transcript JSON for ASR evaluation.

File: WAV · Asr · 16000
Use case: ASR testingAudio analysis· Paired fixture

ASR: 4567 Noisy (WAV)

Noisy twin of the digit sequence 4567 at ~7 dB SNR. Score ASR against the shared transcript JSON.

File: WAV · Asr · 16000
Use case: ASR testingAudio analysis· Paired fixture

ASR: 4567 Transcript (JSON)

Ground-truth transcript for the 4567 ASR utterance pair, expected text: “four five six seven”.

File: JSON · Asr
Use case: ASR testingJSON parsing· Conversion set

ASR: 89 Clean (WAV)

Synthetic clean tone sequence encoding digits 89 (eight nine). Pair with the noisy twin and transcript JSON for ASR evaluation.

File: WAV · Asr · 16000
Use case: ASR testingAudio analysis· Paired fixture

ASR: 89 Noisy (WAV)

Noisy twin of the digit sequence 89 at ~7 dB SNR. Score ASR against the shared transcript JSON.

File: WAV · Asr · 16000
Use case: ASR testingAudio analysis· Paired fixture

ASR: 89 Transcript (JSON)

Ground-truth transcript for the 89 ASR utterance pair, expected text: “eight nine”.

File: JSON · Asr
Use case: ASR testingJSON parsing· Conversion set

ASR: 987654 Clean (WAV)

Synthetic clean tone sequence encoding digits 987654 (nine eight seven six five four). Pair with the noisy twin and transcript JSON for ASR evaluation.

File: WAV · Asr · 16000
Use case: ASR testingAudio analysis· Paired fixture

ASR: 987654 Noisy (WAV)

Noisy twin of the digit sequence 987654 at ~7 dB SNR. Score ASR against the shared transcript JSON.

File: WAV · Asr · 16000
Use case: ASR testingAudio analysis· Paired fixture

ASR: 987654 Transcript (JSON)

Ground-truth transcript for the 987654 ASR utterance pair, expected text: “nine eight seven six five four”.

File: JSON · Asr
Use case: ASR testingJSON parsing· Conversion set

AU: 1 kHz Sine Tone

A pure 1 kHz sine tone stored as a Sun/NeXT AU file, big-endian 16-bit PCM, 3 seconds, 44.1 kHz mono. A compact reference for AU decoding and format conversion.

File: AU · Container Formats · 3 s
Use case: Audio analysisConversion testing

AU: 440 Hz Sine Tone

A pure 440 Hz sine tone stored as a Sun/NeXT AU file, big-endian 16-bit PCM, 3 seconds, 44.1 kHz mono. A compact reference for AU decoding and format conversion.

File: AU · Container Formats · 3 s
Use case: Audio analysisConversion testing