Winkie Pratney Revival Library & YWAM Tyler Audio Cassette Digitizing

Sep 22, 2016 Been a while since I posted.  Tape digitizing is still occurring.  Perhaps a few hundred are done. It's a challenge when I am not in the office everyday but it's getting there. I created a Facebook enthusiastic / fan page for Truth Tapes and Pilgrim Tapes:  https://www.facebook.com/YWAMTruthTapes/ Here's a partial listing of a catalog of Winkie's tapes when they were sold by YWAM LA's Pilgrim Tapes (the successor to YWAM Tyler's Truth Tapes.)  All those tapes are still available at www.WinkiePratney.net and/or  www.moh.org .

Been a while since I posted.  Tape digitizing is still occurring.  Perhaps a few hundred are done. It's a challenge when I am not in the office everyday but it's getting there. I created a Facebook enthusiastic / fan page for Truth Tapes and Pilgrim Tapes:  https://www.facebook.com/YWAMTruthTapes/ Here's a partial listing of a catalog of Winkie's tapes when they were sold by YWAM LA's Pilgrim Tapes (the successor to YWAM Tyler's Truth Tapes.)  All those tapes are still available at www.WinkiePratney.net and/or  www.moh.org .

Calibration Tests To Do: Digitize Frequency Test Tape on all decks. Compare levels from each deck. Check that both D13 & D14 mkIII models are digitizing at the same levels. Note for example that WP-31 and WP-32 are from a set, presumably recorded on the same gear, yet WP-32 is lower in levels.  WP-31 was digitized on D13; WP-32 on D14.   Tape WP-32 and WP-33 were from the same set.  Retransferring WP33, and future sets, so they are digitized on the same deck as other set member tapes. File labeling error on WP-32 & WP-33.  Redo again, both tapes. Use the same deck.  Deleted "alt" versions. Compare levels and sound samples before and after head demagnetization process. Diagnose more about the tick sounds on Deck 12. Digitize with no tape. Digitize with blank tape. Try Metal tape.  See if it's possible to reproduce same ticks on any other decks.  Open chassis and try the wooden stick test. Look for blown caps. Measure voltage from psu. find maintenance

April 19, 2016 7:30 pm - 9:05 pm Few more tapes done. Few more started. Arbitrarily adjusting the pitch to "what sounds good and right" is challenging.  It's using subjection judgement.  Anything subjective like that can be a bit uncomfortable. I keep resetting to the calibrated speed then adjusting from there for new tapes but it's a challenge.  I slowed one down quite a bit but when I came back after the transfer to cut and save in Audacity at that time it still felt a little fast too me.  So some of those decisions are just always going to be subjective.  Fortunately I am not really cleaning these just capturing.  Winkie or others can do the serious filtering and can pitch adjust if needed.  I'd think 96 kHz, 24-bit captures should offer a lot of bandwidth to do resample to correct pitch. Ordered an old-school head demagnetizer today off eBay. http://www.ebay.com/itm/131784093179

April 18-19th (Tax Day) 2016 10:30 PM - 2:15 AM Notice the difference in waveforms.  One is sampled from Deck 12, a TASCAM CC-222, now known to have "issues", and the other Deck 13, a TASCAM CC-222 MK III model. See the "ticks" -- that's noise coming from the deck!  Ouch! I wonder how long it would have taken to find that issue had I not been sampling visually. Here the issue is more clearly seen when zoomed in on. Fortunately Deck 15, a TASCAM CC-222 MK II model, is working okay. When I first discovered the Deck 12 issue I was concerned Deck 15 too was producing tick noises but checking the samples again it appears to be clean. Will need to watch for this issue on other decks also. Possible that this Deck 12 issue is related to power noise leaking in but either way the deck needs to be serviced to be useful. ~~~ Added a "Tapes Played Since Head Cleaned" column. Thinking of typing anything but a "zero" there is

April 17 - 18, 2016 12:50 a.m. Well, this is sad: CLICKS and POPS! Noticed this on Deck 12 and a bit on Deck 15.  Deck 12 is a CC-222 Tray Load -- an oldie, while #15 is MK II model.  But unlike the very clean MK III's used this deck is showing clicking. I diagnosed by putting the same tape in the different decks and found this issue. I could hear the clicking from the headphone jack right on the deck so it's not the A/D converter or downstream.  Normally I would have assumed this clicking or tick, snap, crackle sound was on the tape.  Now I know I need to listen for it and suspect it as a electronics problem not an analog issue. Hopefully it's a bad cap.  I emailed TASCAM asking for help but I highly doubt that give that out for free.  <sigh.> Well, glad I caught it early. Will have to re-do all the tapes ripped ("ripped"? - captured/sampled/played/digitized) from this deck. Good to catch.  That's something th