About & Pics

Description

RTA (Real-Time Analyzer), FFT (amplitude display driven by Fast Fourier Transform), calibration, signal generators...

Everything is included, bundled in a friendly interface with many on-screen controls and smooth real-time display.

== Features ==

+ FFT (amplitude) and RTA (octave, 1/3 octave, ... down to 1/24 octave).
+ Sound pressure level dBA, dBC, and dBZ.
+ Noise Criterion and Noise Rating in octave RTA.
+ Equivalent continuous sound level LAeq, LCeq, LZeq.
+ Impulse response and RT60 measurement.
+ Large font SPL + LEQ meter.
+ THD+N Total Harmonic Distortion plus Noise
+ Lightning-fast FFT with size from 16k to 512k, providing frequency resolution of 0.1Hz directly and 0.01 Hz with downsampling.
+ Sample rate of 48kHz, if supported by the device.
+ Many window functions to choose from.
+ Logarithmic or linear frequency axis.
+ Peak and valley hold with adjustable decay.
+ Highest peak display
+ Adjustable exponential smoothing.
+ Easy pan (drag) and zoom (pinch).
+ Measurement cursors, also used for setting frequency of signal generators.
+ File load/save and full calibration capability, for accurate SPL readings.
+ Signal generators: tone, white noise, white sweep, pink noise, pink sweep, pink octave, pink 1/3 octave.
+ Synchronous measurement mode (including frequency sweep) for clean and fast spectrum analysis.
+ Loopback mode to try out signal generators and window functions.
+ Sharing and printing of screenshots.
+ No ads!

 $6.99 in Google Play

Screenshots

Sound Spectrum Pro screenshot 1Sound Spectrum Pro screenshot 2Sound Spectrum Pro screenshot 3Sound Spectrum Pro screenshot 4Sound Spectrum Pro screenshot 5Sound Spectrum Pro screenshot 6Sound Spectrum Pro screenshot 7Sound Spectrum Pro screenshot 8Sound Spectrum Pro screenshot 9Sound Spectrum Pro screenshot 10Sound Spectrum Pro screenshot 11Sound Spectrum Pro screenshot 12Sound Spectrum Pro screenshot 13Sound Spectrum Pro screenshot 14Sound Spectrum Pro screenshot 15Sound Spectrum Pro screenshot 16Sound Spectrum Pro screenshot 17Sound Spectrum Pro screenshot 18Sound Spectrum Pro screenshot 19Sound Spectrum Pro screenshot 20Sound Spectrum Pro screenshot 21

Version History

Launched Oct 15, 2014 (over 4 years ago).

Releasing new versions every about 2 months, on average.

Jan 08
2019
(Current)
Version 1.76

Minor fixes

Nov 21
2018
Version 1.75

Separate options for all mic input channels

Nov 10
2018
Version 1.74

Fixed automatic gain control and other pre-processing issues on some devices.

Mar 01
2018
Version 1.73

Small fixes

Nov 30
2017
Version 1.72

Bug fixes

Oct 22
2017
Version 1.71

Performance improvements

Sep 30
2017
Version 1.70

Performance improvements

Sep 16
2017
Version 1.69

Performance improvements

Sep 10
2017
Version 1.68

Improvements and bug fixes

Sep 08
2017
Version 1.67

Performance improvements

Sep 05
2017
Version 1.66

Performance improvements

Sep 01
2017
Version 1.65

Bug fixes

Aug 28
2017
Version 1.63

Performance improvements

Aug 20
2017
Version 1.62

Bug fixes

Aug 10
2017
Version 1.61

Performance improvements and small fixes.

Aug 04
2017
Version 1.60

FFT size up to 512k, providing frequency resolution of 0.1Hz directly and 0.01 Hz with downsampling.

Jul 12
2017
Version 1.52

Aligned 1/12 and 1/24 RTA bands to standard musical pitch (A440)

Jun 08
2017
Version 1.51

Added THD+N

Nov 08
2016
Version 1.50

+ Noise Criterion and Noise Rating in octave RTA (v1.50)

Oct 21
2015
Version 1.43

+ Minor fixes (v1.41 - v.1.43)
+ Max peak display (v1.40)
+ SPL/LEQ Meter (v1.30)
+ Configurable graph ranges (v1.30)

Oct 11
2015
Version 1.42

RTA (Real-Time Analyzer), FFT (amplitude display driven by Fast Fourier Transform), calibration, signal generators...

Everything is included, bundled in a friendly interface with many on-screen controls and smooth real-time display.


== Features ==


+ FFT (amplitude) and RTA (octave, 1/3 octave, ... down to 1/24 octave).
+ Sound pressure level dBA, dBC, and dBZ.
+ Equivalent continuous sound level LAeq, LCeq, LZeq.
+ Impulse response and RT60 measurement.
+ Large font SPL + LEQ meter.
+ Lightning-fast FFT with size from 8192 to 65536, giving accuracy better than 1Hz.
+ Sample rate of 48kHz, if supported by the device.
+ Many window functions to choose from.
+ Logarithmic or linear frequency axis.
+ Peak and valley hold with adjustable decay.
+ Highest peak display
+ Adjustable exponential smoothing.
+ Easy pan (drag) and zoom (pinch).
+ Measurement cursors, also used for setting frequency of signal generators.
+ File load/save and full calibration capability, for accurate SPL readings.
+ Signal generators: tone, white noise, white sweep, pink noise, pink sweep, pink octave, pink 1/3 octave.
+ Synchronous measurement mode (including frequency sweep) for clean and fast spectrum analysis.
+ Loopback mode to try out signal generators and window functions.
+ Sharing and printing of screenshots.
+ No ads!

Sep 30
2015
Version 1.41

RTA (Real-Time Analyzer), FFT (amplitude display driven by Fast Fourier Transform), calibration, signal generators...

Everything is included, bundled in a friendly interface with many on-screen controls and smooth real-time display.


== Features ==


+ FFT (amplitude) and RTA (octave, 1/3 octave, ... down to 1/24 octave).
+ Sound pressure level dBA, dBC, and dBZ.
+ Equivalent continuous sound level LAeq, LCeq, LZeq.
+ Impulse response and RT60 measurement.
+ Large font SPL + LEQ meter.
+ Lightning-fast FFT with size from 8192 to 65536, giving accuracy better than 1Hz.
+ Sample rate of 48kHz, if supported by the device.
+ Many window functions to choose from.
+ Logarithmic or linear frequency axis.
+ Peak and valley hold with adjustable decay.
+ Highest peak display
+ Adjustable exponential smoothing.
+ Easy pan (drag) and zoom (pinch).
+ Measurement cursors, also used for setting frequency of signal generators.
+ File load/save and full calibration capability, for accurate SPL readings.
+ Signal generators: tone, white noise, white sweep, pink noise, pink sweep, pink octave, pink 1/3 octave.
+ Synchronous measurement mode (including frequency sweep) for clean and fast spectrum analysis.
+ Loopback mode to try out signal generators and window functions.
+ Sharing and printing of screenshots.
+ No ads!

Sep 06
2015
Version 1.40

RTA (Real-Time Analyzer), FFT (amplitude display driven by Fast Fourier Transform), calibration, signal generators...

Everything is included, bundled in a friendly interface with many on-screen controls and smooth real-time display.


== Features ==


+ FFT (amplitude) and RTA (octave, 1/3 octave, ... down to 1/24 octave).
+ Sound pressure level dBA, dBC, and dBZ.
+ Equivalent continuous sound level LAeq, LCeq, LZeq.
+ Impulse response and RT60 measurement.
+ Large font SPL + LEQ meter.
+ Lightning-fast FFT with size from 8192 to 65536, giving accuracy better than 1Hz.
+ Sample rate of 48kHz, if supported by the device.
+ Many window functions to choose from.
+ Logarithmic or linear frequency axis.
+ Peak and valley hold with adjustable decay.
+ Highest peak display
+ Adjustable exponential smoothing.
+ Easy pan (drag) and zoom (pinch).
+ Measurement cursors, also used for setting frequency of signal generators.
+ File load/save and full calibration capability, for accurate SPL readings.
+ Signal generators: tone, white noise, white sweep, pink noise, pink sweep, pink octave, pink 1/3 octave.
+ Synchronous measurement mode (including frequency sweep) for clean and fast spectrum analysis.
+ Loopback mode to try out signal generators and window functions.
+ Sharing and printing of screenshots.
+ No ads!

Sep 02
2015
Version 1.32

RTA (Real-Time Analyzer), FFT (amplitude display driven by Fast Fourier Transform), calibration, signal generators...

Everything is included, bundled in a friendly interface with many on-screen controls and smooth real-time display.


== Features ==


+ FFT (amplitude) and RTA (octave, 1/3 octave, ... down to 1/24 octave).
+ Sound pressure level dBA, dBC, and dBZ.
+ Equivalent continuous sound level LAeq, LCeq, LZeq.
+ Impulse response and RT60 measurement.
+ Large font SPL + LEQ meter.
+ Lightning-fast FFT with size from 8192 to 65536, giving accuracy better than 1Hz.
+ Sample rate of 48kHz, if supported by the device.
+ Many window functions to choose from.
+ Logarithmic or linear frequency axis.
+ Peak and valley hold with adjustable decay.
+ Adjustable exponential smoothing.
+ Easy pan (drag) and zoom (pinch).
+ Measurement cursors, also used for setting frequency of signal generators.
+ File load/save and full calibration capability, for accurate SPL readings.
+ Signal generators: tone, white noise, white sweep, pink noise, pink sweep, pink octave, pink 1/3 octave.
+ Synchronous measurement mode (including frequency sweep) for clean and fast spectrum analysis.
+ Loopback mode to try out signal generators and window functions.
+ Sharing and printing of screenshots.
+ No ads!

Jun 27
2015
Version 1.31

RTA (Real-Time Analyzer), FFT (amplitude display driven by Fast Fourier Transform), calibration, signal generators...

Everything is included, bundled in a friendly interface with many on-screen controls and smooth real-time display.


== Features ==


+ FFT (amplitude) and RTA (octave, 1/3 octave, ... down to 1/24 octave).
+ Sound pressure level dBA, dBC, and dBZ.
+ Equivalent continuous sound level LAeq, LCeq, LZeq.
+ Impulse response and RT60 measurement.
+ Large font SPL + LEQ meter.
+ Lightning-fast FFT with size from 8192 to 65536, giving accuracy better than 1Hz.
+ Sample rate of 48kHz, if supported by the device.
+ Many window functions to choose from.
+ Logarithmic or linear frequency axis.
+ Peak and valley hold with adjustable decay.
+ Adjustable exponential smoothing.
+ Easy pan (drag) and zoom (pinch).
+ Measurement cursors, also used for setting frequency of signal generators.
+ File load/save and full calibration capability, for accurate SPL readings.
+ Signal generators: tone, white noise, white sweep, pink noise, pink sweep, pink octave, pink 1/3 octave.
+ Synchronous measurement mode (including frequency sweep) for clean and fast spectrum analysis.
+ Loopback mode to try out signal generators and window functions.
+ Sharing and printing of screenshots.
+ No ads!

Jun 13
2015
Version 1.30

RTA (Real-Time Analyzer), FFT (amplitude display driven by Fast Fourier Transform), calibration, signal generators...

Everything is included, bundled in a friendly interface with many on-screen controls and smooth real-time display.


== Features ==


+ FFT (amplitude) and RTA (octave, 1/3 octave, ... down to 1/24 octave).
+ Sound pressure level dBA, dBC, and dBZ.
+ Equivalent continuous sound level LAeq, LCeq, LZeq.
+ Impulse response and RT60 measurement.
+ Large font SPL + LEQ meter.
+ Lightning-fast FFT with size from 8192 to 65536, giving accuracy better than 1Hz.
+ Sample rate of 48kHz, if supported by the device.
+ Many window functions to choose from.
+ Logarithmic or linear frequency axis.
+ Peak and valley hold with adjustable decay.
+ Adjustable exponential smoothing.
+ Easy pan (drag) and zoom (pinch).
+ Measurement cursors, also used for setting frequency of signal generators.
+ File load/save and full calibration capability, for accurate SPL readings.
+ Signal generators: tone, white noise, white sweep, pink noise, pink sweep, pink octave, pink 1/3 octave.
+ Synchronous measurement mode (including frequency sweep) for clean and fast spectrum analysis.
+ Loopback mode to try out signal generators and window functions.
+ Sharing and printing of screenshots.
+ No ads!

Apr 20
2015
Version 1.22

RTA (Real-Time Analyzer), FFT (amplitude display driven by Fast Fourier Transform), calibration, signal generators...

Everything is included, bundled in a friendly interface with many on-screen controls and smooth real-time display.


== Features ==


+ FFT (amplitude) and RTA (octave, 1/3 octave, ... down to 1/24 octave).
+ Sound pressure level dBA, dBC, and dBZ.
+ Impulse response and RT60 measurement.
+ Lightning-fast FFT with size from 8192 to 65536, giving accuracy better than 1Hz.
+ Sample rate of 48kHz, if supported by the device.
+ Many window functions to choose from.
+ Logarithmic or linear frequency axis.
+ Peak and valley hold with adjustable decay.
+ Adjustable exponential smoothing.
+ Easy pan (drag) and zoom (pinch).
+ Measurement cursors, also used for setting frequency of signal generators.
+ File load/save and full calibration capability, for accurate SPL readings.
+ Signal generators: tone, white noise, white sweep, pink noise, pink sweep, pink octave, pink 1/3 octave.
+ Synchronous measurement mode (including frequency sweep) for clean and fast spectrum analysis.
+ Loopback mode to try out signal generators and window functions.
+ Sharing and printing of screenshots.
+ No ads!

Mar 25
2015
Version 1.21

RTA (Real-Time Analyzer), FFT (amplitude display driven by Fast Fourier Transform), calibration, signal generators...

Everything is included, bundled in a friendly interface with many on-screen controls and smooth real-time display.


== Features ==


+ FFT (amplitude) and RTA (octave, 1/3 octave, ... down to 1/24 octave).
+ Sound pressure level dBA, dBC, and dBZ.
+ Impulse response and RT60 measurement.
+ Lightning-fast FFT with size from 8192 to 65536, giving accuracy better than 1Hz.
+ Sample rate of 48kHz, if supported by the device.
+ Many window functions to choose from.
+ Logarithmic or linear frequency axis.
+ Peak and valley hold with adjustable decay.
+ Adjustable exponential smoothing.
+ Easy pan (drag) and zoom (pinch).
+ Measurement cursors, also used for setting frequency of signal generators.
+ File load/save and full calibration capability, for accurate SPL readings.
+ Signal generators: tone, white noise, white sweep, pink noise, pink sweep, pink octave, pink 1/3 octave.
+ Synchronous measurement mode (including frequency sweep) for clean and fast spectrum analysis.
+ Loopback mode to try out signal generators and window functions.
+ Sharing and printing of screenshots.
+ No ads!

Mar 04
2015
Version 1.20

RTA (Real-Time Analyzer), FFT (amplitude display driven by Fast Fourier Transform), calibration, signal generators...

Everything is included, bundled in a friendly interface with many on-screen controls and smooth real-time display.


== Features ==


+ FFT (amplitude) and RTA (octave, 1/3 octave, ... down to 1/24 octave).
+ Sound pressure level dBA and dBC.
+ Impulse response and RT60 measurement.
+ Lightning-fast FFT with size from 8192 to 65536, giving accuracy better than 1Hz.
+ Sample rate of 48kHz, if supported by the device.
+ Many window functions to choose from.
+ Logarithmic or linear frequency axis.
+ Peak and valley hold with adjustable decay.
+ Adjustable exponential smoothing.
+ Easy pan (drag) and zoom (pinch).
+ Measurement cursors, also used for setting frequency of signal generators.
+ File load/save and full calibration capability, for accurate SPL readings.
+ Signal generators: tone, white noise, white sweep, pink noise, pink sweep, pink octave, pink 1/3 octave.
+ Synchronous measurement mode (including frequency sweep) for clean and fast spectrum analysis.
+ Loopback mode to try out signal generators and window functions.
+ Sharing and printing of screenshots.
+ No ads!

Nov 11
2014
Version 1.10

RTA (Real-Time Analyzer), FFT (amplitude display driven by Fast Fourier Transform), calibration, signal generators...

Everything is included, bundled in a friendly interface with many on-screen controls and smooth real-time display.


== Features ==


+ FFT (amplitude) and RTA (octave, 1/3 octave, ... down to 1/24 octave).
+ Sound pressure level dBA and dBC.
+ Impulse response and RT60 measurement.
+ Lightning-fast FFT with size from 8192 to 65536, giving accuracy better than 1Hz.
+ Sample rate of 48kHz, if supported by the device.
+ Many window functions to choose from.
+ Logarithmic or linear frequency axis.
+ Peak hold with adjustable decay.
+ Adjustable exponential smoothing.
+ Easy pan (drag) and zoom (pinch).
+ Measurement cursors, also used for setting frequency of signal generators.
+ File load/save and full calibration capability, for accurate SPL readings.
+ Signal generators: tone, white noise, white sweep, pink noise, pink sweep, pink octave, pink 1/3 octave.
+ Synchronous measurement mode (including frequency sweep) for clean and fast spectrum analysis.
+ Loopback mode to try out signal generators and window functions.
+ Sharing and printing of screenshots.
+ No ads!

Previous 3 versions
1

Total Ratings

5
1
4
0
3
0
2
0
1
0
31

Total Ratings

5
26
4
1
3
1
2
1
1
2