wav
258.4 KB1 kHz Sine Tone
A pure 1000 Hz sine tone, 3 seconds, 16-bit 44.1 kHz mono: a clean reference signal for level metering, spectrum analysis, and waveform rendering.
- File
- WAV · Reference Tones · 3 s
- Use case
- Audio analysis
Explore the test library
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.
396 results
Page 1 of 17; 24 results per page.
wav
62.5 KB1 kHz Tone @ 16000 Hz Sample Rate (WAV)
A 1 kHz sine tone sampled at 16000 Hz: part of a sample-rate ladder (8/16/44.1/48/96 kHz) of the identical tone, for testing resampling, sample-rate detection, and aliasing.
- File
- WAV · Sample Rate Ladder · 2 s
- Use case
- Audio analysisConversion testing· Conversion set
wav
172.3 KB1 kHz Tone @ 44100 Hz Sample Rate (WAV)
A 1 kHz sine tone sampled at 44100 Hz: part of a sample-rate ladder (8/16/44.1/48/96 kHz) of the identical tone, for testing resampling, sample-rate detection, and aliasing.
- File
- WAV · Sample Rate Ladder · 2 s
- Use case
- Audio analysisConversion testing· Conversion set
wav
187.5 KB1 kHz Tone @ 48000 Hz Sample Rate (WAV)
A 1 kHz sine tone sampled at 48000 Hz: part of a sample-rate ladder (8/16/44.1/48/96 kHz) of the identical tone, for testing resampling, sample-rate detection, and aliasing.
- File
- WAV · Sample Rate Ladder · 2 s
- Use case
- Audio analysisConversion testing· Conversion set
wav
31.3 KB1 kHz Tone @ 8000 Hz Sample Rate (WAV)
A 1 kHz sine tone sampled at 8000 Hz: part of a sample-rate ladder (8/16/44.1/48/96 kHz) of the identical tone, for testing resampling, sample-rate detection, and aliasing.
- File
- WAV · Sample Rate Ladder · 2 s
- Use case
- Audio analysisConversion testing· Conversion set
wav
375 KB1 kHz Tone @ 96000 Hz Sample Rate (WAV)
A 1 kHz sine tone sampled at 96000 Hz: part of a sample-rate ladder (8/16/44.1/48/96 kHz) of the identical tone, for testing resampling, sample-rate detection, and aliasing.
- File
- WAV · Sample Rate Ladder · 2 s
- Use case
- Audio analysisConversion testing· Conversion set
wav
258.4 KB220 Hz Sine Tone
A pure 220 Hz sine tone, 3 seconds, 16-bit 44.1 kHz mono: a clean reference signal for level metering, spectrum analysis, and waveform rendering.
- File
- WAV · Reference Tones · 3 s
- Use case
- Audio analysis
wav
258.4 KB440 Hz Sine Tone (A4)
A pure 440 Hz sine tone, 3 seconds, 16-bit 44.1 kHz mono: a clean reference signal for level metering, spectrum analysis, and waveform rendering.
- File
- WAV · Reference Tones · 3 s
- Use case
- Audio analysis
wav
172.3 KB440 Hz Tone @ 16-bit (WAV)
A 440 Hz sine tone stored as 16-bit PCM: part of a bit-depth ladder (8/16/24-bit) of the identical tone, for testing bit-depth conversion, dithering, and quantisation-noise handling.
- File
- WAV · Bit Depth Ladder · 2 s
- Use case
- Audio analysisConversion testing· Conversion set
wav
258.4 KB440 Hz Tone @ 24-bit (WAV)
A 440 Hz sine tone stored as 24-bit PCM: part of a bit-depth ladder (8/16/24-bit) of the identical tone, for testing bit-depth conversion, dithering, and quantisation-noise handling.
- File
- WAV · Bit Depth Ladder · 2 s
- Use case
- Audio analysisConversion testing· Conversion set
wav
86.2 KB440 Hz Tone @ 8-bit (WAV)
A 440 Hz sine tone stored as 8-bit PCM: part of a bit-depth ladder (8/16/24-bit) of the identical tone, for testing bit-depth conversion, dithering, and quantisation-noise handling.
- File
- WAV · Bit Depth Ladder · 2 s
- Use case
- Audio analysisConversion testing· Conversion set
wav
3 MB5.1 Surround Channel Identification (WAV, 6ch)
A six-channel 5.1 surround WAV that plays a 1-second tone in each channel in turn, in the standard WAV order (FL, FR, C, LFE, SL, SR). A fixture for testing multichannel decoding, downmixing, and channel-order handling.
- File
- WAV · Channels · 44100 Hz
- Use case
- Audio analysis
aac
71.9 KBAAC: ADTS
The clip as raw AAC in an ADTS stream: the codec behind most streaming and mobile audio. For testing AAC decoders and remux into MP4.
- File
- AAC · Codec Set · AAC-LC
- Use case
- Conversion testingAudio analysis· Conversion set
ac3
71 KBAC-3: Dolby Digital
The clip as AC-3 (Dolby Digital): the multichannel codec used in DVD/broadcast. Rendered here in stereo; for testing AC-3 decoding and conversion.
- File
- AC3 · Codec Set · AC-3 (Dolby Digital)
- Use case
- Conversion testingAudio analysis· Conversion set
aiff
258.5 KBAIFF: 1 kHz Sine Tone
A pure 1 kHz sine tone stored as AIFF: Apple's big-endian 16-bit PCM container, 3 seconds, 44.1 kHz mono. A clean reference for testing AIFF decoders and WAV↔AIFF conversion.
- File
- AIFF · Container Formats · 3 s
- Use case
- Audio analysisConversion testing
aiff
258.5 KBAIFF: 440 Hz Sine Tone
A pure 440 Hz sine tone stored as AIFF: Apple's big-endian 16-bit PCM container, 3 seconds, 44.1 kHz mono. A clean reference for testing AIFF decoders and WAV↔AIFF conversion.
- File
- AIFF · Container Formats · 3 s
- Use case
- Audio analysisConversion testing
m4a
184.4 KBALAC: Apple Lossless
The clip as Apple Lossless (ALAC) in an M4A container: lossless, unlike the AAC M4A twin. For testing ALAC decoding and lossless conversion.
- File
- M4A · Codec Set · ALAC
- Use case
- Conversion testingAudio analysis· Conversion set
amr
4.7 KBAMR: Narrowband Speech
The clip resampled to 8 kHz mono and encoded as AMR narrowband: the telephony/voice-note codec. For testing AMR decoding and speech-codec conversion.
- File
- AMR · Codec Set · AMR-NB
- Use case
- Conversion testingAudio analysis· Conversion set
wav
14.4 KBASR Cue: “one” Clean (WAV)
Short synthetic cue tone for “one”: clean reference for wake-word / digit ASR smoke tests.
- File
- WAV · Asr · 16000
- Use case
- ASR testingAudio analysis· Paired fixture
wav
14.4 KBASR Cue: “one” Noisy (WAV)
Noisy twin of the “one” cue tone (~5 dB SNR).
- File
- WAV · Asr · 16000
- Use case
- ASR testingAudio analysis· Paired fixture
wav
14.4 KBASR Cue: “zero” Clean (WAV)
Short synthetic cue tone for “zero”: clean reference for wake-word / digit ASR smoke tests.
- File
- WAV · Asr · 16000
- Use case
- ASR testingAudio analysis· Paired fixture
wav
14.4 KBASR Cue: “zero” Noisy (WAV)
Noisy twin of the “zero” cue tone (~5 dB SNR).
- File
- WAV · Asr · 16000
- Use case
- ASR testingAudio analysis· Paired fixture
wav
27.9 KBASR Extra: 0000 Clean (WAV)
Extra synthetic digit utterance 0000 (zero zero zero zero): clean twin.
- File
- WAV · Asr · 16000
- Use case
- ASR testingAudio analysis· Paired fixture
wav
27.9 KBASR Extra: 0000 Noisy (WAV)
Noisy twin of digit sequence 0000.
- File
- WAV · Asr · 16000
- Use case
- ASR testingAudio analysis· Paired fixture