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! -
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.
Output level is not weighted to compensate the ear*) This means that you need to increase the volume of the low and high frequencies to get a fair idea of your hearing. For frequency in region approx 1kHz - 3kHz appers perceived as stronger compare to other frequency especially bass tones.
*) Why does the sound sound better at higher volume (loudness) ?
Well, the ear perceives all frequencies equally strongly. iI could be shown by Flethcer and Munson, two researchers already in 1933, with their measurements.
For those who want to know more Click HERE
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
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, 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.
Output level is not weighted to compensate the ear*) This means that you need to increase the volume of the low and high frequencies to get a fair idea of your hearing. For frequency in region approx 1kHz - 3kHz appers perceived as stronger compare to other frequency especially bass tones. Read more under the Basic generator.
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
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, member in music band HardDiskMusic
How long can you listening for diffrent loudness. This table explain:
85 dB (A) 8h,
88 dB (A) 4h,
91 dB (A) 2h,
94 dB (A) 1h,
97 dB (A) 30min,
100 dB (A) 15min.
Above table show the 3dB of level rule.
3dB rule means for every of increase of 3 dB the safe listen time cut by a half. For examples from 94dB (A) (safe time= 1h) and incrase by 3 dB to 97 dB (A) cut just to 30 minutes at for 97dB (A) — which is common at live events or extended mixing sessions — risks developing serious and permanent sensorineural hearing loss. For those who want to know more Click HERE
Read more in this full Soundonsound.com article here:
https://www.soundonsound.com/sound-advice/preventing-negating-hearing-loss