20 Hz to 20 kHz Audio Tone generators Videos Basic and Advance types
Can be used to check amplifier signal path, Good Morning Hearing Check Up, or find tinnitus frequency (if any) or Just for Fun for Studios. Engineers.
- Warning - Important! These Soundcheck videos is a technical instruments - These "Tone generator" can´t replace a medical hearing test.
- Take care of your ears - Always listening at a low volume! -
This is a small part from an article in Soundonsound.com - Complete article the link is below!
One common rule of thumbis called the 3dB rule. For example, according to the National Institute for Occupational Safety and Health in the United States (NIOSH), it is safe to listen at a sustained level of 85dB(A) for up to eight hours, but if the sustained level rises a mere 3dB to 88dB (A), that halves to just four hours.
And for every additional 3dB of level, the length of time available for safe exposure halves again: At 91dB(A), it is safe to listen for just two hours; and just one hour at 94dB(A). And yes, listening for just 30 minutesat 97dB(A) — which is common at live events or extended mixing sessions — risks developing serious and permanent sensorineural hearing loss.
The 3dB rule: 85 dB(A) 8h, 88 dB(A) 4h, 91 dB(A) 2h, 94 dB(A) 1h, 97 dB(A) 30min, 100 dB(A) 15min.
The full Soundonsound.com article here: https://www.soundonsound.com/sound-advice/preventing-negating-hearing-loss
Basic generator
An easy way to do a frequency check for amplifiers, signal path, speakers etc. 4 test modes. 40Hz to 15 kHz in 19 steps.
4 Output modes:
1. Simultaneously Left & Right
2. Switches between Left and Right
3. White noise, simultaneously Left & Right
4. White noise, switches Left & Right
Technical information:
An easy way to do a frequency check for amplifiers, signal path, speakers etc.
Frequency range: 40Hz to 15kHz in 19 steps 40, 75, 150, 440Hz, 1, 2,....15kHz
Output modes: L & R, L, R, and White noise check
Audio recorded at -20dB, 44,1 kbit
Note! Output level out is not weighted to compensate the ear frequency response, there for frequency in region approx 1kHz - 2kHz appers perceived as stronger compare to other frequency especially bass tones.
Warning - Important
The Soundcheck is a technical instrument - "Tone generator" and can´t replace a medical hearing test.
Note! Speakers in small portable units often fail to reproduce frequencies above 5000 Hz, and the speaker(s) can also generate parasite (false) frequencies.
Take care of your ears - Always listening at a low volume!
Video by JAN KARLQVIST Owner & member in music band HardDiskMusic
Advance generator
An easy way to do a frequency check for amplifiers, signal path, speakers etc. 7 test modes. 20 Hz to 20 kHz continuous.
7 Output modes:
1. Left & Right Lo - Hi
2. Left only Lo - Hi
3. Right only Lo - Hi
4. Left & Right Hi - Lo
5. Left only Hi - Lo
6. Right only Hi - Lo
7. White noise, switches L, R
Technical information:
An easy way to do a frequency check for amplifiers, signal path, speakers etc.
Frequency range: 20Hz to 20 kHz continuous
Output modes: L & R, L, R, and White noise check
Audio recorded at -20dB, 44,1 kbit
Note! Output level out is not weighted to compensate the ear frequency response, there for frequency in region approx 1kHz - 2kHz appers perceived as stronger compare to other frequency especially bass tones.
Warning - Important
The Soundcheck is a technical instrument - "Tone generator" and can´t replace a medical hearing test.
Note! Speakers in small portable units often fail to reproduce frequencies above 5000 Hz, andthe speaker(s) can also generate parasite (false) frequencies.
Take care of your ears - Always listening at a low volume!
Video by JAN KARLQVIST Owner & member in music band HardDiskMusic
