Convert TTA to AMR
Max file size 100mb.
TTA vs AMR Format Comparison
| Aspect | TTA (Source Format) | AMR (Target Format) |
|---|---|---|
| Format Overview |
TTA
True Audio
True Audio (TTA) is a free, open-source lossless audio codec created in 2004. It uses a simple adaptive prediction filter followed by entropy coding to achieve lossless compression ratios comparable to FLAC and APE. TTA is designed for simplicity and speed, offering real-time encoding and decoding with minimal CPU usage, making it well suited for hardware players and embedded devices. Lossless Modern |
AMR
Adaptive Multi-Rate Audio
Adaptive Multi-Rate (AMR) is a lossy audio codec originally developed by Ericsson for GSM mobile telephony. Standardized by 3GPP, AMR dynamically adjusts its bitrate between 4.75 and 12.2 kbps based on network conditions, optimizing speech quality in real-time. AMR is designed specifically for voice communication at extremely low bitrates. Lossy Legacy |
| Technical Specifications |
Sample Rates: 8 kHz - 192 kHz
Bit Depth: 8, 16, 24-bit integer Channels: Mono, Stereo, Multichannel (up to 6) Codec: TTA1 (adaptive prediction + Rice coding) Container: Native TTA (.tta), Matroska (.mka) |
Sample Rate: 8 kHz (AMR-NB), 16 kHz (AMR-WB)
Bit Rates: 4.75-12.2 kbps (NB), 6.6-23.85 kbps (WB) Channels: Mono only Codec: ACELP (Algebraic CELP) Container: Raw AMR (.amr), 3GP (.3gp) |
| Audio Encoding |
TTA uses an adaptive prediction filter that models audio signals and encodes residuals with Rice/Golomb entropy coding for bit-perfect lossless compression: # Encode WAV to TTA lossless ffmpeg -i input.wav -codec:a tta output.tta # Encode with specific sample format ffmpeg -i input.wav -codec:a tta \ -sample_fmt s16 output.tta |
AMR uses algebraic code-excited linear prediction (ACELP) optimized for speech at very low bitrates: # Encode to AMR-NB at 12.2 kbps ffmpeg -i input.wav -codec:a libopencore_amrnb \ -b:a 12200 -ar 8000 -ac 1 output.amr # AMR wideband ffmpeg -i input.wav -codec:a libvo_amrwbenc \ -b:a 23850 -ar 16000 -ac 1 output.amr |
| Audio Features |
|
|
| Advantages |
|
|
| Disadvantages |
|
|
| Common Uses |
|
|
| Best For |
|
|
| Version History |
Introduced: 2004 (Alexander Djourik)
Current Version: TTA1 (single-stream) Status: Stable, maintained open-source Evolution: TTA1 (2004) → libtta (C library) → FFmpeg integration |
Introduced: 1999 (3GPP/Ericsson)
Current Version: AMR-NB, AMR-WB (G.722.2) Status: Mature, widely deployed Evolution: AMR-NB (1999) → AMR-WB (2001) → AMR-WB+ (2004) |
| Software Support |
Media Players: foobar2000, VLC, AIMP, Deadbeef, Rockbox
Encoders: TTA encoder, FFmpeg, foobar2000 Mobile: Rockbox-based players, limited native support DAWs: Limited - typically requires conversion first Hardware: Rockbox-compatible players, some Cowon/iRiver |
Media Players: VLC, QuickTime, Windows Media Player
Mobile: All GSM phones, iOS, Android native Encoders: FFmpeg (libopencore_amrnb/libvo_amrwbenc) Telecom: 3GPP-compliant base stations VoIP: FreeSWITCH, Ooh323 |
Why Convert TTA to AMR?
Converting TTA to AMR transforms your lossless True Audio files into the widely compatible Adaptive Multi-Rate Audio format. This is a lossy conversion that permanently reduces audio data to achieve smaller file sizes. The trade-off between file size and quality makes AMR ideal for portable playback, streaming, and distribution where storage and bandwidth are limited.
TTA preserves every sample of the original recording through lossless compression, resulting in larger files that maintain full audio fidelity. By converting to AMR, you significantly reduce file sizes while retaining perceptually transparent quality at reasonable bitrates. This makes your music collection practical for mobile devices, streaming, and sharing.
The conversion process decodes the TTA lossless stream back to raw PCM audio, then re-encodes it using the AMR codec. Since TTA is lossless, the AMR encoder receives the full-quality original signal, ensuring the best possible lossy encoding result equivalent to encoding directly from an uncompressed WAV source.
Keep your original TTA files as master archives whenever possible. Converting TTA to AMR is a one-way quality reduction that cannot be reversed to recover the original lossless quality. Use AMR copies for everyday listening and distribution while preserving TTA originals for future re-encoding needs.
Key Benefits of Converting TTA to AMR:
- Smaller Files: Significantly reduced file size compared to lossless TTA originals
- Device Compatibility: AMR plays on virtually all devices and platforms
- Optimal Encoding: Lossless TTA source provides the best possible input for AMR encoding
- Portable Playback: Practical file sizes for phones, tablets, and portable players
- Streaming Ready: AMR files are ideal for streaming and web distribution
- Batch Processing: Convert entire TTA libraries to AMR for everyday listening
- Preserve Originals: Keep TTA masters for archival while using AMR for daily use
Practical Examples
Example 1: Portable Music Collection
Scenario: A music enthusiast wants to create a portable copy of their TTA lossless library for use on a smartphone with limited storage.
Source: favorite_album.tta (55 min, 16-bit/44.1 kHz, 380 MB) Conversion: TTA → AMR Result: favorite_album.amr (~55 MB at high quality) Workflow: 1. Convert TTA → AMR for mobile playback 2. Transfer AMR files to smartphone 3. Enjoy music at 1/7 the file size 4. Original TTA preserved on home server 5. Re-encode from TTA if different quality needed
Example 2: Music Sharing and Distribution
Scenario: A musician needs to share demo tracks with fans. The original recordings are in TTA format, too large for email and messaging.
Source: demo_song.tta (4 min, 24-bit/48 kHz, 65 MB) Conversion: TTA → AMR (high quality) Result: demo_song.amr (~6 MB) Benefits: - Small enough to share via email or messaging - Plays on any device without special software - High-quality encoding from lossless TTA source - Quick conversion thanks to TTA's fast decoding - Universal AMR playback compatibility
Example 3: Podcast Feed Preparation
Scenario: A podcast producer records and masters in TTA lossless but needs to publish in AMR for podcast directories and RSS feeds.
Source: episode_042.tta (60 min, 16-bit/44.1 kHz, 420 MB) Conversion: TTA → AMR Result: episode_042.amr (~42 MB) Distribution requirements met: - Podcast-directory-compatible AMR format - Reasonable file size for RSS download - Best encoding quality from lossless master - Consistent audio quality across episodes - TTA masters archived for future remastering
Frequently Asked Questions (FAQ)
Q: Does converting TTA to AMR lose any audio quality?
A: Yes. AMR is a lossy format, so some audio data is permanently discarded during encoding. However, since TTA is lossless, the AMR encoder receives the full-quality original signal, producing the best possible result.
Q: Will the file size change after converting TTA to AMR?
A: Yes. AMR files are significantly smaller than TTA because lossy compression removes audio data. Expect roughly 60-90% size reduction depending on the AMR bitrate setting.
Q: Why convert from TTA to AMR instead of another format?
A: AMR (Adaptive Multi-Rate Audio) offers broad device compatibility, smaller file sizes, and wide platform support ideal for portable playback and sharing.
Q: Is TTA a good format for archival purposes?
A: TTA is an excellent archival format providing bit-perfect lossless compression with fast encoding speed. However, FLAC has a larger ecosystem for long-term archival. TTA's advantage is its simplicity and processing speed for large-scale batch tasks.
Q: Can I convert TTA back to AMR after converting AMR to TTA?
A: You can re-encode from TTA, but each lossy encode introduces new artifacts. Always encode from the highest-quality source and keep TTA lossless files as masters.
Q: What software can play TTA files?
A: TTA is supported by foobar2000, VLC, AIMP, Deadbeef, and Rockbox-based portable players. While not as universal as FLAC, TTA has good coverage among enthusiast-oriented music software.
Q: How fast is the TTA to AMR conversion?
A: TTA decodes very quickly due to its simple algorithm, typically 10-20x faster than real-time. The overall speed depends on the AMR encoding complexity. Most files convert in seconds on modern hardware.
Q: Can I batch convert my entire TTA library to AMR?
A: Yes. Batch conversion is fully supported. Our converter processes each TTA file individually, converting it to AMR with your chosen settings. TTA's fast decoding makes batch conversion of large libraries efficient.