Polaris vs Shredpix - Encode COFDMTV
Side-by-side comparison of two open source alternatives
Polaris
Connect to your Polaris server and listen to music on the go! Key features: - Shuffle mode - Songs preloading - Offline mode
Shredpix - Encode COFDMTV
*Shredpix* converts images to COFDMTV encoded audio signals and is based on open-source software.COFDMTV is based on COFDM (coded orthogonal frequency-division multiplexing) technology:- 160 ms long OFDM symbols- 6.25 Hz per sub-carrier- 1/8 guard interval- differentially encoded PSK (phase-shift keying) modulation- systematic polar codes for forward error correctionFollowing modes are supported:Using SPC(64800, 43072):Mode 6: 8PSK, 2700 Hz BW and about 10 seconds longMode 7: 8PSK, 2500 Hz BW and about 11 seconds longMode 8: QPSK, 2500 Hz BW and about 16 seconds longMode 9: QPSK, 2250 Hz BW and about 18 seconds longUsing SPC(64512, 43072):Mode 10: 8PSK, 3200 Hz BW and about 9 seconds longMode 11: 8PSK, 2400 Hz BW and about 11 seconds longMode 12: QPSK, 2400 Hz BW and about 16 seconds longMode 13: QPSK, 1600 Hz BW and about 24 seconds longPayload must be smaller or equal to 5380 bytes.JPEG, PNG and WebP image formats are supported.Width and height are limited to between 16 and 1024 pixels.
| Feature | Polaris | Shredpix - Encode COFDMTV |
|---|---|---|
| License | MIT | 0BSD |
| Install sources | F-DroidGitHub | GitHubIzzyOnDroid |
| Categories | Media PlayerVideo | Media PlayerVideo |
| Features | Ad-FreeOpen SourceNo Tracking | Ad-FreeOpen SourceNo Tracking |
| Platforms | Android | Android |
| Website | ||
| Source code |