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Audio Boost

Audio Boost

Description

Sets a boost value for bass and/or treble.

To set the default start-up boost value, use Settings for non-volatile (start-up) settings.

Format

PC B [boost]

Parameters

boost is a value between 0 and 65535.
- Treble boost can be set from -12 to +10.5 dB boost (in 1.5 dB steps) at and above frequencies ranging from 1000 to 15000 Hz (in 1000 Hz steps).
- Bass boost can be set from 0 to 15 dB boost (in 1 dB steps) below frequencies ranging from 20 to 150 Hz (in 10 Hz steps).
- To calculate the value for boost:
  - treble boost = (treble amplitude[see table below] * 16) + treble frequency/1000
  - bass boost = ((bass amplitude * 16) + (bass frequency/10)
  - boost = treble boost * 256 + bass boost
- A boost value of 0 will turn off the audio enhancement.

Note

Treble amplitude is a twos-complement value for the amplitude.

Treble amplitude value	Twos-complement	Binary	Hexadecimal	Treble boost (dB)
15	-8	`1111`	F	-12 dB
14	-7	`1110`	E	-10.5 dB
13	-6	`1101`	D	-9 dB
12	-5	`1100`	C	-7.5 dB
11	-4	`1011`	B	-6 dB
10	-3	`1010`	A	-4.5 dB
9	-2	`1001`	9	-3 dB
8	-1	`1000`	8	-1.5 dB
0	0	`0000`	0	0 dB (boost off)
1	1	`0001`	1	+1.5 dB
2	2	`0010`	2	+3 dB
3	3	`0011`	3	+4.5 dB
4	4	`0100`	4	+6 dB
5	5	`0101`	5	+7.5 dB
6	6	`0110`	6	+9 dB
7	7	`0111`	7	+10.5 dB

Response Format

NULL | response | Enn

If no parameters are given, then response is the current boost setting.

Example

Treble boost frequency: 10 kHz (and above)
Treble boost amplitude: +10.5 dB
Bass boost frequency: 60 Hz (and below)
Bass boost amplitude: +15 dB

treble boost = (7 * 16) + 10000/1000
             = 112 + 10 = 122
bass boost   = (15 * 16) + 60/10
             = 240 + 6 = 246
Boost value  = 122 * 256 + 246
             = 31478

PC B 31478

To retrieve the current boost value:

PC B

31748

To turn off boost:

PC B 0