Responsalyzer Component

The Responsalyzer is used to measure the system response. This can be in any venue, or the response of components in a Q-SYS design.

There is a limit of four Responsalyzers in a design.

There are two inputs to the Responsalyzer, and no outputs:

Measurement - This is usually a microphone placed somewhere in the venue, or the output of one or a series of components in a Q-SYS design.

Reference - This is a constant input containing all the frequencies of the audio band (20 Hz to 20 kHz), usually white or pink noise. The Reference signal is not used for RTA measurements.

Controls

There are two inputs to the Responsalyzer: Measurement, and Reference.

Control	Function	Default/Range
Response Graph	The scales for the Response Graph vary depending on the measurement method you select, see below. When the X axis is frequency, the horizontal movement of the vertical crosshair cursor snaps to the bandwidth setting in the Responsalyzer Properties, 1 octave, 1/3 octave, and so on. The vertical movement of the horizontal crosshair follows the magnitude or amplitude of the signal at the point of intersection with the vertical crosshair. There are 10 octaves spanning the audio frequency range. The frequency is doubled (or halved) for each octave. When Mag or Mag/Phase is selected, there is an orange line visible at the top of the graph. This line represents the Coherence of the Measurement signal compared to the Reference signal. The range is zero (at the bottom of the graph) to one at the top of the graph. Any coherence signal below 50% should be considered not usable.	N/A
Magnitude	Measures the magnitude of the Measurement input signal compared to the Reference Input signal over the audio frequency range. The green line is the Measurement Input signal. Requires a Reference Input, typically the same source as the Measurement Input but prior to any EQ other DSP.	X Axis = 20Hz to 20kHz Y Axis Left = -20dB to 20 dB
Magnitude/Phase	Same as the Magnitude selection but with the addition of a phase line (magenta) to compare the phase of the Measurement Input to the Reference Input. When both lines are the same across the frequency range, the phase is the same. Requires a Reference Input, typically the same source as the Measurement Input but prior to any EQ other DSP.	X Axis = 20Hz to 20kHz Y Axis Left, Gain = -20dB to 20 dB Y Axis Right, Phase = -180° to 180°
Impulse	Measures the time difference of the energy pulse of the Measurement Input compared to the Reference Input. The Reference Input is at 0.0 on the X axis (not shown), and the Measurement Input pulse is displayed at the point on the X axis representing the time difference. The Y axis displays the amplitude of the Measurement Input. Requires a Reference Input, typically the same source as the Measurement Input but prior to any EQ other DSP.	X Axis = 0.0ms to 5.3 ms Y Axis Left = -1.0 to 1.0
RTA	Measures the Measurement Input signal's magnitude over the audio frequency range. The RTA function does not use a Reference Signal.	X Axis = 20Hz to 20kHz Y Axis = -80 dB to 20dB

Control

Function

Default/Range

Response Graph

The scales for the Response Graph vary depending on the measurement method you select, see below.

When the X axis is frequency, the horizontal movement of the vertical crosshair cursor snaps to the bandwidth setting in the Responsalyzer Properties, 1 octave, 1/3 octave, and so on.

The vertical movement of the horizontal crosshair follows the magnitude or amplitude of the signal at the point of intersection with the vertical crosshair.

There are 10 octaves spanning the audio frequency range. The frequency is doubled (or halved) for each octave.

When Mag or Mag/Phase is selected, there is an orange line visible at the top of the graph. This line represents the Coherence of the Measurement signal compared to the Reference signal. The range is zero (at the bottom of the graph) to one at the top of the graph. Any coherence signal below 50% should be considered not usable.

N/A

Magnitude

Measures the magnitude of the Measurement input signal compared to the Reference Input signal over the audio frequency range. The green line is the Measurement Input signal.

Requires a Reference Input, typically the same source as the Measurement Input but prior to any EQ other DSP.

X Axis = 20Hz to 20kHz

Y Axis Left = -20dB to 20 dB

Magnitude/Phase

Same as the Magnitude selection but with the addition of a phase line (magenta) to compare the phase of the Measurement Input to the Reference Input. When both lines are the same across the frequency range, the phase is the same.

Requires a Reference Input, typically the same source as the Measurement Input but prior to any EQ other DSP.

X Axis = 20Hz to 20kHz

Y Axis Left, Gain = -20dB to 20 dB

Y Axis Right, Phase = -180° to 180°

Impulse

Measures the time difference of the energy pulse of the Measurement Input compared to the Reference Input. The Reference Input is at 0.0 on the X axis (not shown), and the Measurement Input pulse is displayed at the point on the X axis representing the time difference.

The Y axis displays the amplitude of the Measurement Input.

Requires a Reference Input, typically the same source as the Measurement Input but prior to any EQ other DSP.

X Axis = 0.0ms to 5.3 ms

Y Axis Left = -1.0 to 1.0

RTA

Measures the Measurement Input signal's magnitude over the audio frequency range. The RTA function does not use a Reference Signal.

X Axis = 20Hz to 20kHz

Y Axis = -80 dB to 20dB

Properties

Property	Function	Choices
RTA Bandwidth	Sets the bandwidth for the RTA measurements. The default is 1/12 Octave. This sets the resolution logarithmically and should be adjusted along with the FFT size.	1 Octave 1/3 Octave 1/6 Octave 1/12 Octave 1/24 Octave
FFT Size	Sets the resolution and response of the RTA measurements linearly. The larger the FFT bin, the slower the response with greater resolution. A smaller FFT bin size gives faster response with less resolution.	4016 8192 16384 32768 65536

Property

Function

Choices

RTA Bandwidth

Sets the bandwidth for the RTA measurements. The default is 1/12 Octave.

This sets the resolution logarithmically and should be adjusted along with the FFT size.

1 Octave

1/3 Octave

1/6 Octave

1/12 Octave

1/24 Octave

FFT Size

Sets the resolution and response of the RTA measurements linearly.

The larger the FFT bin, the slower the response with greater resolution. A smaller FFT bin size gives faster response with less resolution.

4016

8192

16384

32768

65536

Control Pins

Pin Name	Value	String	Position	Pins Available
Clear ¹	Trigger	Input / Output
Coherence	These control pins are all vector type outputs for use with a Control Script.	Output
Impulse Response	Output
Magnitude Response	Output
Phase Response	Output
RTA Response	Output
Update	Output
1. The Clear trigger is used to clear the graph when you change or mute the input.

Pin Name

Value

String

Position

Pins Available

Clear ¹

Trigger

Input / Output

Coherence

These control pins are all vector type outputs for use with a Control Script.

Output

Impulse Response

Output

Magnitude Response

Output

Phase Response

Output

RTA Response

Output

Update

Output

1. The Clear trigger is used to clear the graph when you change or mute the input.

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