CES 2012: TigApp's Audio Audit
[Another news flash from the CES 2012 news deluge. I’m not an Apple guy anymore – but perhaps one of you might find this, currently free, app of use. It seems to me that if your only source in your system is an iThing, then this app would be invaluable. Also, if the iThing’s microphone is any good, then having a frequency analyzer with you at all times would be a heck of a lot of fun – especially at shows. English does not appear to be their native language, and I am somewhat confused by what their target use cases[s] are beyond possibly these two].
“TigApp is a young and dynamic company which develops applications for the iPhone, iPad and iPod.
This application is focused on testing different audio systems for home and professional use.
The application serves as a reference generator of sounds or records for the purpose of setting up, testing and burn-in speakers, headphones and Audio components.
This application comes to the AppStore December 23, 2011 and will be free for a limited time.”
From the TigApp website:
Frequency generator
generates sinusoidal frequency or swap sinusoidal signal for testing
Noise generator
generates white, pink, brown, human and silence noise
white noise – noise containing all frequencies in the range defined by the same volume
pink noise – containing all the audio frequencies with a defined volume falls off at 3dB per octave
brown noise – containing all the audio frequencies with a defined volume falls off at 6dB per octave
human noise – containing all the audio frequency range with a defined volume adjusted according to physiological properties of the human ear
silence noise – white noise with reduced volume
Adjusting of the stereo base
when right speaker is on the right side and left speaker is on the left side – it’s OK
Indication of inverted phase
control of the inverted phase (swap of the plus and minus cable on one speaker)
Records for testing
music with the full spectrum frequency range for testing
Microphone
for ambient testing
Detail information
“Analogue” indicators:
Peak indicator – red color (-75dB – 0dB)
RMS indicator – black color (-75dB – 0dB)
Peak and RMS indicators for the left and the right channel
Frequency generator
Sinusoidal signal of frequency (1/3 octave scale, Peak -12dB, RMS -15dB):
20Hz, 25 Hz, 31Hz, 40Hz, 50Hz, 63Hz, 80Hz, 100Hz, 125Hz, 160Hz, 200Hz, 250Hz, 315Hz, 400Hz, 500Hz, 630Hz, 800Hz, 1000Hz, 1250Hz, 1600Hz, 2000Hz, 2500Hz, 3150Hz, 4000Hz, 5000Hz, 6300Hz, 8000Hz, 10000Hz, 12500Hz, 16000Hz, 20000Hz
Swap sinusoidal signal: 20Hz – 20000Hz (logarithmic course, Peak -12dB, RMS -15dB)
Swap sinusoidal signal: 20Hz – 630 Hz (logarithmic course, Peak -12dB, RMS -15dB)
Swap sinusoidal signal: 630Hz – 20000Hz (logarithmic course, Peak -12dB, RMS -15dB)
Noise generator
White Noise: Peak -10dB, RMS -15dB, frequency range 20Hz – 20000Hz)
Pink Noise: Peak -2dB, RMS -15dB, frequency range 20Hz – 20000Hz)
Brown Noise: Peak -2dB, RMS -15dB, frequency range 20Hz – 20000Hz)
Human Noise: Peak -2dB, RMS -15dB, frequency range 20Hz – 20000Hz)
Silence Noise: Peak -55dB, RMS -96dB, frequency range 20Hz – 20000Hz)
Adjustment stereo base
Bass Drums L: left side (Peak -2dB, RMS -15dB)
Bass Drums R: right side (Peak -2dB, RMS -15dB)
Bass Drums L-R-L: transition from left to right side and back (duration 30s, Peak -2dB, RMS -19dB)
Treble Drums L: left side (Peak -1dB, RMS -16dB)
Treble Drums R: right side (Peak -1dB, RMS -16dB)
Treble Drums L-R-L: transition from left to right side and back (duration 30s, Peak -1dB, RMS -21dB)
Indication of inverted phase
Guitar-normal: phase in order (Peak -0.3dB, RMS -14dB)
Guitar-Invert: right channel inverted (Peak -0.3dB, RMS -14dB)
Cool-normal: phase in order(Peak -0.3dB, RMS -13dB)
Cool-invert: pitch channel inverted (Peak -0.3dB, RMS -13dB)
Test records
Classic: duration 30s, Peak -0.3dB, RMS -15dB
Cool: duration 36s, Peak -0.3dB, RMS -13dB
Guitar: duration 36s, Peak -0.3dB, RMS -14dB
Jazz: duration 36s, Peak -0.3dB, RMS -15dB
News: duration 38s, Peak -0.3dB, RMS -15dB
Road: duration 50s, Peak -0.3dB, RMS -16dB
Microphone
Precise graphics indicators for the both channels (from -22dB to 0dB, step by 1dB)
