Crossover Block

Please refer to the TTP Overview section for more details on the controlling Tesira devices using the TTP protocol.

Each element of the command instruction is delimited by one or more spaces. The commands are case sensitive and upper and lower case characters are used.

The TTP string to adjust a DSP object attribute is structured in the following order:

Instance_Tag Command Attribute [Index] [Value] LF

Instance Tag: Is always required. Review the Instance Tag section for more details.
Command: Is always required. Review the Command section for more details.
Attribute: Is always required. Review the Attribute section for more details.
[Index]: Is shown in [Brackets] as may be required depending on the Attribute being referenced. If not required it should not be defined. Depending on the Attribute, it can be made up of one or more indexes. Please refer to the Index section for more details.
[Value]: Is shown in [Brackets] as may be required depending on the Command or Attribute being referenced. If not be required it should not be defined. The Value would not normally have spaces, if it does it can be defined in "double quotes". It can also be a numerical value. Please refer to the Value section for more details.
LF: A Line feed or Carriage Return is used to define the end of the command.

Instance Tag	Command	Attribute Code
Crossover1	toggle	synchronize

band is indexed by number from high to low, so in a four-way crossover high=1, mid high=2, low mid =3 and low=4,
filter is indexed by number. 1 is the high cutoff frequency for each band while 2 is the low.

Filter Type and Slope Values must be specified within square brackets -filter type must be specified before slope and both parameters MUST be included.

Example

Crossover1 set filterTypeSlope 1 1 [LINKWITZ_RILEY 24] +OK

The following format is also acceptable. Since "type" and "slope" are clearly denoted within the {braces}, the [value] variables can be provided in either order.

Example

Crossover1 set filterTypeSlope 1 1 {"type":LINKWITZ_RILEY "slope":24} +OK

Reason Code	Attribute Code	Command	Indexes	Value Range
Filter Type	filterType	get	band, filter	BUTTERWORTH, LINKWITZ_RILEY, BESSEL
Filter Type & Slope	filterTypeSlope	get / set	band, filter	[Type, slope] or {"type":Type "slope":slope} Type:BUTTERWORTH, Slope:6,12,18,24,30,36,42,48 Type: LINKWITZ_RILEY, Slope: 12, 24,36,48 Type: BESSEL Slope:6,12,18,24,30,36,42,48
Cutoff Frequency	frequency	get / set increment decrement	band, filter	20.0 - 20000.0 Hz
Input Level	inputLevel	get / set increment decrement		inputMinLevel - inputMaxLevel dB
Input Mute	inputMute	get / set toggle		false, true
Band Count	numBands	get		2 - 4
Band Filter Count	numFilters	get	band	1 - 2
Output Invert	outputInvert	get / set toggle	band	false, true
Output Level	outputLevel	get / set increment decrement	band	outputMinLevel - outputMaxLevel dB
Output Mute	outputMute	get / set toggle	band	false, true
Filter Slope	slope	get	band, filter	Linkwitz/Riley: 12, 24,36,48 Butterworth: 6,12,18,24,30,36,42,48 Bessel: 6,12,18,24,30,36,42,48
Synchronize Bands	synchronize	get / set toggle		false, true