Why does HearThis need to optimize some large files?

The private upload layer can accept files up to 100 MB, but the general multimodal listening model has a much smaller single-audio-object ceiling. HearThis solves that mismatch before the file reaches the model.

Does HearThis compress every upload?

No. Smaller files are used unchanged. Only files above the model-safe threshold are routed through a long-audio path or converted into a smaller listening proxy.

What happens to large speech recordings?

Large true audio files analyzed in Speech mode use a dedicated long-audio transcription URI path. The transcript is then turned into the structured HearThis report.

Will optimizing a large mix remove stereo information?

Mix/Master and A/B workflows favor a stereo excerpt montage for large sources specifically to preserve more spatial and production information than a simple mono downsample would.

Does the original large music file get uploaded?

For the local proxy path, the analysis proxy is what gets uploaded to the model workflow. The original remains on the device. Large Speech mode is different because the original private audio is needed by the long-audio transcription route.

HearThisUniversal audio intelligence

LARGE AUDIO ANALYSIS

Analyze large audio files without hitting the model’s small-file ceiling.

HearThis accepts supported audio and video files up to 100 MB, then automatically chooses a size-safe listening path. Large speech recordings use the long-audio transcription route; large music, mixes and soundscapes are prepared into model-safe listening proxies before private upload.

Analyze a large audio file See pricing

Private temporary audio Audio-grounded analysis No fake precision scores

WHAT YOU GET

Analysis that leads to a decision.

Up to 100 MB uploads

Upload supported MP3, WAV, M4A, FLAC, OGG, Opus, AAC, AIFF, WebM and common video containers without being limited to the general model's much smaller single-audio-object ceiling.

Automatic route selection

HearThis checks the source size and listening mode, then chooses direct listening, long-speech processing, full-duration downsampling or a high-fidelity montage automatically.

Long Speech handling

Large speech-mode audio keeps the original private file and uses the dedicated long-recording transcription URI path before the structured report is generated.

Music-safe optimization

Large songs and sound files are prepared locally into a model-safe listening proxy. When possible, the full duration is preserved so the report can still reason about the complete structure.

Mix-aware stereo montage

For very long sources, Mix/Master work and large A/B comparisons, HearThis preserves more production detail with an evenly sampled stereo montage and explicit original-time mapping.

Private temporary processing

Proxy preparation happens locally in the browser where possible, private model uploads are cleaned after processing, and audio is not stored in Recent Analyses history.

WORKFLOW

From audio file to useful next move.

Choose or drop a supported audio/video file up to 100 MB.

Select the listening mode. HearThis shows the processing route before analysis begins.

Large sources are automatically routed or optimized below the upstream audio-object ceiling.

Review the resulting report, jump through evidence, ask follow-up questions, or compare another version.

QUESTIONS

What to know before analyzing.

LISTEN DEEPER

Keep the 100 MB upload promise without sending an oversized object to the wrong model.

HearThis exposes the route it will use before analysis so large-file behavior is visible, predictable and aligned with the listening job.

Analyze a large audio file