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Dolby TrueHD at a glance
Dolby TrueHD
TrueHD belongs to the Blu-ray and HD home-cinema period, when lossless multichannel branding became part of how premium disc releases differentiated themselves.
AMR at a glance
AMR
AMR belongs to the era when mobile communication formats were heavily optimized around speech efficiency rather than music playback quality.
Format comparison
| Feature | Dolby TrueHD | AMR |
|---|---|---|
| File type | Audio | Audio |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2005 | 1999 |
| Inventor | Dolby Laboratories | 3GPP |
| Status | active | active |
| Primary use cases |
|
|
| Multitrack support | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Supported | Supported |
When to use each format
When to use Dolby TrueHD
- Your source file is already in Dolby TrueHD.
- Preserve source expectations before exporting to AMR.
- Dolby TrueHD is commonly used in audio workflows.
When to use AMR
- Your target workflow expects AMR.
- Improve delivery compatibility with AMR.
- AMR is commonly used in audio workflows.
FAQs
Why convert Dolby TrueHD to AMR?
Convert to AMR when the target is a speech-oriented mobile or telephony workflow, such as voicemail systems, call recordings, or compatibility with older handset ecosystems.
It is useful when bandwidth and voice intelligibility matter more than music quality.
For music or general listening, AAC, Opus, or WAV are better targets.
What changes when converting Dolby TrueHD to AMR?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting Dolby TrueHD to AMR?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.