raydac / zxtap-to-wav

Converter of .TAP files (a ZX-Spectrum emulator data format) into .WAV sound files

Easy command line utility to convert .TAP files (a data format for ZX-Spectrum emulator) into sound WAV file. (Also there is similar utility to convert binary files into WAV files for personal computer BK-0010)

How to build?

Just clone the project and use maven mvn package -Ppublish command or load needed prebuit version from the latest release.

Arguments

-a    amplify sound signal
-f int
      frequency of result wav, in Hz (default 22050)
-g int
      time gap between sound blocks, in seconds (default 1)
-i string
      source TAP file
-o string
      target WAV file
-s    add silence before the first file

Example

zxtap2wav -i RENEGADE.tap
zxtap2wav -a -i RENEGADE.tap -o RENEGADE.wav -f 44100 -s

How to?

Make longer silence interval between files in WAV

Just add -g 2 or -g 3 to make delay in 2 or 3 seconds.

Add silence in start of generated WAV file

Use -s and silence will be generated in start of WAV file.

I want 44100 Hz quantized WAV

Use parameter -f 44100

Sound is too silent

Use flag -a and generated sound in WAV will be amplified to maximum.

zxtap-to-wav's Issues

File infected with a virus!!

Hi,
An amazing tool for the ZX Spectrum. However, one of the files is infected with a virus!
Check zxtap2wav-windows-386.exe, it's infected with Gen:Variant.Zusy.256843 as reported by my BitDefender.

panic: runtime error: makeslice: len out of range

Using the release 1.0.1 with this tap file, when running:

.\zxtap2wav-windows-amd64.exe -i '.\Underground (19xx)(Skorpyo)(Sp).tap'

I get:

  TAP2WAV converter of .TAP files (a format for ZX-Spectrum emulators) into its .WAV image (PCM, mono).
  Project page : https://github.com/raydac/zxtap-to-wav
        Author : Igor Maznitsa (http://www.igormaznitsa.com)
       Version : 1.0.1

panic: runtime error: makeslice: len out of range

goroutine 1 [running]:
github.com/raydac/zxtap-zxtape.ReadTapeBlock({0x89d688, 0xc00004e028})
        /home/igorm/Projects/Pet/zxtap-to-wav/src/zxtape/TapeBlock.go:124 +0x65
main.ParseTap({0x89d688, 0xc00004e028})
        /home/igorm/Projects/Pet/zxtap-to-wav/src/main.go:56 +0x56
main.loadTapFile({0xc00000e3c0?, 0xc00000e3c0?})
        /home/igorm/Projects/Pet/zxtap-to-wav/src/main.go:79 +0xb8
main.main()
        /home/igorm/Projects/Pet/zxtap-to-wav/src/main.go:177 +0x185

Any idea what I could do to fix this issue?

Viruses warnings

Pilot tones too long

Hi,

The pilot tone on both header and headerless blocks is about 2-3 times longer than original Spectrum pilot. Is there a reason for that?

It doesn't affect functionality but wastes a hefty amount of tape space when you save 9 games per tape side, each containing about 6 pilots, that's 54 pilots times 2-3 seconds, 108-162 seconds is wasted per tape side just on extra long pilots.

Could it be that TAP files themselves contain such long pilots? If so, please ignore this issue.