I have never been to India. I was called Audioguru by a salesman at a job where I was the audio engineer for a tele-conferencing products manufacturer.
The salesman also has never been to India. The salesman was grateful that I fixed a common problem.
Many customers complained that voices from the tele-conferencing products sounded muffled and many words were difficult or impossible to understand. I measured the round trip frequency response of local telephone lines and found that 3kHz was attenuated about -12dB then I complained to Bell. Bell said that -12dB is normal and their spec had a maximum attenuation at 3kHz of -15dB which is extremely muffled then many consonant sounds in speech are muted.
So I designed and built a transmit equalizer that boosted 3kHz by about +12dB (with a sharp drop of higher frequencies) then voices sounded crisp and clear. Every one that I demonstrated was sold.
The salesman also has never been to India. The salesman was grateful that I fixed a common problem.
Many customers complained that voices from the tele-conferencing products sounded muffled and many words were difficult or impossible to understand. I measured the round trip frequency response of local telephone lines and found that 3kHz was attenuated about -12dB then I complained to Bell. Bell said that -12dB is normal and their spec had a maximum attenuation at 3kHz of -15dB which is extremely muffled then many consonant sounds in speech are muted.
So I designed and built a transmit equalizer that boosted 3kHz by about +12dB (with a sharp drop of higher frequencies) then voices sounded crisp and clear. Every one that I demonstrated was sold.