Is this a ZX81 recording or not?
Posted: Sun Jul 26, 2020 8:32 pm
Hi All,
Looking to backup/digitise my Dad's old collection of ZX81 tapes, there's probably about 30 of them, half commercial ones and the rest self recorded. Spent the weekend rigging up an old Tandberg Audio Tutor, a converter for it's DIN output through an amplifier board, into an audio recorder. I tried out with a copy of Dice from Psion software which looked nice and short and after getting levels was able to load direct from tape, and also from the recording. I'm guessing that different tapes may need different levels...
Anyway, first of his self-recorded tapes and the loading noise is a bit different from what I expected, it also doesn't load (yet). It starts off sounding like a ZX81 but then goes a lot faster for the main section, then drops again. Here's a sample https://drive.google.com/file/d/1FF65bS ... sp=sharing (WARNING: sounds loud!)
I think from what my Dad says at the beginning of the recording: "ZXDB with fastbaud 11" might be just my ears and imagination. We did have Spectrum I think later on, along with VIC20, and I wondered if Spectrum did this, but looking on Youtube it sounds different again. Any ideas? I wonder if I might encounter more like this.
Also any pointers on the recording level constructively received.
Best wishes to all, Will
Looking to backup/digitise my Dad's old collection of ZX81 tapes, there's probably about 30 of them, half commercial ones and the rest self recorded. Spent the weekend rigging up an old Tandberg Audio Tutor, a converter for it's DIN output through an amplifier board, into an audio recorder. I tried out with a copy of Dice from Psion software which looked nice and short and after getting levels was able to load direct from tape, and also from the recording. I'm guessing that different tapes may need different levels...
Anyway, first of his self-recorded tapes and the loading noise is a bit different from what I expected, it also doesn't load (yet). It starts off sounding like a ZX81 but then goes a lot faster for the main section, then drops again. Here's a sample https://drive.google.com/file/d/1FF65bS ... sp=sharing (WARNING: sounds loud!)
I think from what my Dad says at the beginning of the recording: "ZXDB with fastbaud 11" might be just my ears and imagination. We did have Spectrum I think later on, along with VIC20, and I wondered if Spectrum did this, but looking on Youtube it sounds different again. Any ideas? I wonder if I might encounter more like this.
Also any pointers on the recording level constructively received.
Best wishes to all, Will