Convert TSH to MP3

A Cenix recorder or player may save audio as .tsh when the destination phone, car stereo, editor, or sharing service accepts only MP3. Conversion also makes proprietary recordings easier to archive and play on other devices.

What the TSH format is

In the Audio category, TSH generally means a proprietary Cenix audio file associated with Cenix recording or playback hardware and its supporting software. It is not a standardized codec or container, so the extension alone does not reveal whether the file contains PCM audio, compressed audio, metadata, or recorder-specific structures.

Cenix device owners and users of Cenix software are the main users of this format. Do not treat a TSH file as a TS or WAV file, and do not convert it by renaming recording.tsh to recording.mp3; changing the filename does not change the encoded audio.

What the MP3 format is

MP3 is a widely supported, lossy audio format used by phones, car stereos, portable players, websites, and messaging services. It produces much smaller files than typical uncompressed PCM audio, with adjustable bit rate, sample rate, and channel configuration.

For speech, 64–96 kbps mono is often adequate. For music, 128–192 kbps stereo is a common compromise between size and quality; 192–256 kbps preserves more detail at the cost of larger files. MP3 cannot restore information that the original TSH encoding already discarded.

Convert with the Cenix software first

1. Make a backup of the original .tsh file.
2. Open it in the Cenix recorder utility, player software, or application that created it. If the file came from a device, check its manual or bundled software for an import or transfer function.
3. Use File → Export, File → Save as, or the equivalent render command. Export to WAV when MP3 is not offered; a PCM WAV file is the most compatible intermediate format.
4. Open the resulting WAV in Audacity, VLC, or another trusted audio encoder and export it as MP3 using the required bit rate and channel mode.

The original Cenix software is usually the safest option because it understands any private header, indexing, channel layout, or recording segments in the TSH file. A generic converter may open the file but omit recorder-specific metadata or decode only one track.

Test the file with FFmpeg

FFmpeg can convert a TSH file only when the installed build recognizes the particular Cenix variant. Inspect the file first:

ffprobe -hide_banner "recording.tsh"

If the output identifies an audio stream, convert the first audio stream to a constant-bit-rate MP3:

ffmpeg -i "recording.tsh" -map 0:a:0 -c:a libmp3lame -b:a 192k "recording.mp3"

For variable-bit-rate encoding, use a quality setting instead:

ffmpeg -i "recording.tsh" -map 0:a:0 -c:a libmp3lame -q:a 2 "recording.mp3"

If ffprobe reports an unknown format, invalid data, or no audio stream, FFmpeg cannot decode that TSH variant directly. Export WAV from the Cenix application first; installing codecs or changing the extension will not solve an unsupported proprietary format.

Use Audacity or VLC after decoding

Audacity can import TSH only if its installed import libraries recognize the underlying data. Try File → Import → Audio, then use File → Export Audio and select MP3. If Audacity rejects the file, do not force the import; decode or export it with Cenix software and then open the WAV.

VLC can serve as an alternative for a file that it can play: use Media → Convert/Save, add the source, choose Convert, select an MP3 audio profile, and start the conversion. VLC is not a universal TSH decoder, so successful playback is required before this workflow can work.

Use an online converter cautiously

CloudConvert and Convertio can be tested when their current upload page explicitly accepts the exact .tsh file type. Support for a proprietary Cenix variant is not guaranteed merely because a service lists the TSH extension. Upload only non-confidential recordings, check the resulting duration and audio, and delete the uploaded file when the service provides that option. Never install an unknown executable or browser extension offered as a converter.

Quality and compatibility limits

MP3 encoding is lossy. If the TSH source is already compressed, exporting directly to MP3 adds another lossy encode; an intermediate WAV avoids an unnecessary second decode-and-encode step only when the original software can produce it, and WAV cannot recover lost source detail.

Play the complete MP3 after conversion and check its duration, channels, loudness, and metadata. If the file contains multiple channels, timestamps, or segmented recordings, select the intended track or channel in the Cenix software before exporting. Re-export from the original application when a generic converter produces missing audio, altered timing, or incomplete metadata.