apt-X Standard

apt-X Standard audio codecapt-X Standard is a 16 bit audio codec, which is capable of 4:1 audio compression and decompression with a Latency of <2.5mS @ Fs 48kHz and dynamic range of >92dB.


The apt-X Standard audio codec is the ‘granddaddy’ of Broadcast contribution and distribution and was first introduced in the early 1990s on a Lucent DSP solution. apt-X Standard audio coding was revolutionary for its time and providing the unique competitive advantages of; low delay, error resilience and great audio quality meant it quickly became synonymous with audio transport throughout the broadcast and film post-production industries worldwide.

Specification View
Compression  Ratio  4:1
Data Rates 56 kbps to 384kbps(16-bit 7.5kHz mono to 16-bit 24kHz stereo)
Frequency Response
  10Hz to 24kHz
Delay <2.5ms @ Fs 48KHz

Dynamic Range

 >92bB
THD+N -68.8db (0.05%)
Sample Frequencies 0-48kHz
Auxiliary Data Embedded, sample rate dependent up to 1/4 Fs kbps
AutoSync Can re-establish connection in 5ms

Features View

XLow coding delay

XNo duelling effects with other algorithms

XBased on Time Domain ADPCM Principles and not psychoacoustic masking

X No issue with concatenation

XInteroperability with hardware units and the widely deployed apt-X100.dll in up to 15 consecutive passes


Applications View

XRadio Automation

XSTLs and SSLs

XAudio Post Production

XSatellite UpLinks


Platforms Supported View

XFreescale 56xx DSP

X.dll

XAdobe Audition Cool Edit Plug-In

XChip + EPROM Solutions

XHardware Evaluation Board


More Information View