[BC] Cassette deck maintenance

[Jerry Mathis]

Someone's not thinking this through clearly.
 
The tape speed MAKES NO DIFFERENCE, as long as it's the same for recording AND playback. If the tape is running slower than the standard 1 7/8 IPS, it will still record the tone at the same frequency that is fed into it. Ditto if the tape is running faster than the standard 1 7/8 IPS.
 
If the tape is played back AT THE SAME TAPE SPEED THAT WAS USED TO RECORD THE TONE, the frequency of the played back tone will STILL be the same as the audio oscillator tone frequency that was recorded.

--
Jerry Mathis

On Wed, Feb 17, 2010 at 12:28 AM, Dana Puopolo <dpuopolo at usa.net> wrote:
>No, you are NOT comparing the record to the playback-you are comparing the
>OSCILLATOR to the playback! Let's say the recorder is running slow-it would
>record the tone slow and pay it back slow-COMPARED TO THE OSCILLATOR! Same
>thing if it was running fast. You are using the OSCILLATOR as your
>standard-and as long as that standard isn't changed during and after the
>recording, the standard can be ANY frequency!

>-D

>From: Steve Lewis <steve at theengineeringbureau.com>

>'Scuse me, Tom...

>As I understand your explanation below, this method would only work if the
>recording were made at the proper 1 7/8's IPS but allowed speed adjustment
>during playback.  If the recording took place at some other speed, that
>other speed would be required to play it back properly.