Specifications

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APPENDIX E • SERIAL COMMANDS
109
Filter
DESCRIPTION:
This command selects/reports the setting of filters on input and audio processing channels.
BINARY FORM DETAILS
COMMAND FORM: <Header><Argument 1><Argument 2>[ Argument 3]
COMMAND ID: 14
ARGUMENT SIZE: 3 words
ARGUMENT FORM:
Name: Channel Group Node Type
Size 8 bits 8 bits 8 bits 8 bits
Type Unsigned integer Unsigned integer Unsigned integer Unsigned integer
Range See Grp and Chnnls 3, 5 Grp 3: 1-4 1-11
(Mic Processing) Grp 5: 1-15
Name: Frequency Gain/Slope Bandwidth/SubType
Size 32 bits 16 bits 16 bits
Type Unsigned Float Float Unsigned Float
Range/value Types 1-6 8-11, Type Range Type Range
1-3 N/A 1-3 N/A
20-20,000 4-5 -15 to +15 dB 4-5 N/A
Type 7 6 -15 to +15 dB 6 .05 to 5.0
500-5,000 7 N/A 7 N/A
8-9 12, 18, 24 dB/octave 8-10 2=low pass
10 12, 24 dB/octave 3=high pass
11 N/A 11 0.05 to 5.00
Units Hz dB/dB per octave
RETURN VALUES:
Unit always returns the last executed input filter selection in the same form as above.
TEXT FORM DETAILS
COMMAND FORM:
<DEVICE> FILTER <Channel> <Group> <Node> [Type Frequency Gain Bandwidth]
Where:
DEVICE: See General Text command form Description
FILTER Text Command
Channel See Group and Channels (Table 1, page 93)
Groups ‘M’, ‘P’ See Group and Channels (Table 1, page 93)
Node
1-4 node of a Mic input filter
1-15 node of an audio processing filter
(filter serial command descriptions on next page)