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"I would like to thank you for the superb work for the 16" Transcription. We are especially thankful for the faster turnaround time you provided, which was above and beyond the fastest selected option that we chose. Our 92 year old cousin was able to hear it before her serious decline. Also, I wanted to let you know that the History Center in Galveston (at the Rosenberg Public Library) was impressed with your work has some interest in contacting you at some point in the future. I am forwarding your information to them and hope they might agree to digitize their collection. Again, thanks for the fine work,"

Glossary – W


Practical unit of electrical power equal to one joule per second. (In a DC circuit the number of watts is equal to the product of the volts and amperes; in an AC circuit it is equal to the product of the volts and amperes multiplied by the power factor.)
The shape of the graph representing the successive values of a varying quantity.
Of a sinusoidal plane progressive wave. The perpendicular distance between two wavefronts in which the phases differ by one complete period. The wavelength is equal to the wave velocity divided by the frequency.
Unit of magnetic flux.
The noise measured within the audio frequency band using an instrument which has a frequency selective characteristic.
Filtering a frequency response, prior to measurement.
A filtering network, corresponding to the ear's sensitivity at 40 phons.
A filtering network, corresponding to the ear's sensitivity at 70 phons.
A filtering network, corresponding to the ear's sensitivity at 100 phons.
A filter used for weighting a frequency response, prior to measurement.
Subjective description of a sound with a high proportion of reverberation present.
Random noise signal having an equal amount of energy per hertz. Therefore the energy between 100 and 200 Hz is equal to that between 10,000 and 10,200 Hz.
An acoustically transparent filter, placed over a microphone to shield it from wind-induced vibration.
A low frequency loudspeaker.
Repetitive slow variations in tape speed.
Deviation of frequency resulting from irregular motion in the recording, from duplication or reproduction of a tone, or from deformation of the recording medium.
The length of the tape's path along which tape and head are in intimate contact. Sometimes measured as the angle of arrival and departure of the tape with respect to the head.


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"I would like to thank you for the superb work for the 16" Transcription. We are especially thankful for the faster turnaround time you provided, which was above and beyond the fastest selected option that we chose. Our 92 year old cousin was able to hear it before her serious decline. Also, I wanted to let you know that the History Center in Galveston (at the Rosenberg Public Library) was impressed with your work has some interest in contacting you at some point in the future. I am forwarding your information to them and hope they might agree to digitize their collection. Again, thanks for the fine work,"