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ACCESS Product Manual
Comparison Chart for ACCESS Codecs
Required
Bitrate
Coding
Delay
Audio
Bandwidth
BRIC HQ1: Sends good quality audio over narrow digital channels with low delay.
28 kb/s
55 ms
15 kHz
A1 Mono
42 kb/s
55 ms
15 kHz
A2 Stereo
56 kb/s
55 ms
15 kHz
A3 Dual Mono allows independent programming to be sent on both L&R channels
24 kb/s
55 ms
15 kHz
A4 Mono 24Kb restricted to 24 kbps coding rate
24 kb/s
170 ms
15 kHz
B1 Mono
24 kb/s
170 ms
12 kHz
B2 Mono 12Kb reduced bandwidth with fewer coding artifacts
30 kb/s
170 ms
15 kHz
B3 Stereo
30 kb/s
170 ms
12 kHz
B4 Stereo 12Kb reduced bandwidth with fewer coding artifacts
24 kb/s
170 ms
15 kHz
B5 Stereo 24Kb
BRIC HQ2: Sends excellent quality audio over narrow digital channels with moderate delay
BRIC ULB: For “worst case” networks - delivers 7kHz voice at ultra low bitrates with low
delay (not recommended for music)
14 kb/s
49 ms
7 kHz
C1 Mono lowest bitrate of any BRIC algorithm
Linear PCM: Delivers transparent audio with no compression and very low delay - for use
on high throughput networks.
768 kb/s
19 ms
20 kHz
F1 Mono
1536 kb/s
19 ms
20 kHz
F2 Dual Mono
512 kb/s
19 ms
15 kHz
F3 Mono
1024 kb/s
19 ms
15 kHz
F4 Dual Mono
FLAC: Free Lossless Audio Compression provides transparent audio while conserving bandwidth. FLAC bitrate is variable and based on audio input.
~540 kb/s
26 ms
20 kHz
K1 Mono
~1080 kb/s
26 ms
20 kHz
K2 Dual Mono
~360 kb/s
26 ms
15 kHz
K3 Mono
~720 kb/s
26 ms
15 kHz
K4 Dual Mono
VoIP: G.711 and G.722 coding algorithms for compatibility with SIP-style VoIP phones.
64 kb/s
35 ms
3 kHz
X1 G.711 a-law
64 kb/s
35 ms
3 kHz
X2 G.711 µ-law
64 kb/s
35 ms
7 kHz
X3 G.722
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