Recording LPs with Pure Vinyl

The Pure Vinyl Recorder application was designed from the ground up specifically for creating high-resolution, archival quality transcriptions of your precious records - at sample rates and resolutions up to 192 kHz / 32 bit.

Naturally, the Pure Vinyl Recorder can apply precision RIAA EQ in software... and even can automatically downsample to CD or DVD-A format while recording. A high-quality output is provided for flawless monitoring while recording, using the software-based EQ, if desired.

The adjustable, threshold-based noise gate doesn't start recording until the needle drops - and even can be configured to omit that "needle drop" part of the recording. When the tonearm is lifted at the end of the side, the noise gate automatically "closes" - pausing the recording, giving you the opportunity to flip the record, clean the other side, grab a snack, etc. At this time, the application is "deaf" to incoming audio. When ready to resume recording, just click the noise gate Lock button, re-arming the recording.

Pure Vinyl scrupulously maintains a high-quality 64-bit floating-point (double precision) processing path from the moment that the sound is sampled, through the entire downsampling operation, and on to monitoring and playback, to insure that you don't lose any of your precious sound.

Downsampling (decimation) is done properly, using widely vetted techniques. For example, 192 kHz audio is first upsampled and zero-padded, then antialias filtered and decimated. This is a computationally "expensive" process - that Pure Vinyl performs when there are plenty of CPU resources available: during recording. Decimating while recording high-sample-rate audio can be a tremendous timesaver - especially when using high-quality downsampling software, which is a slow process.

The downsampled file can be used for Pure Vinyl editing operations. The file's pristine, but large, high-sample-rate "cousin" can be archived offline, and used for later playback. The track marks made during the editing process are mirrored perfectly during playback of the high-sample-rate file.

All sound file formats used are lossless: AIFF or Apple's CoreAudio (.caf). The latter format permits recordings of unlimited duration with any sample rate or sample size. Exporting sound files to 16-bit (or 24 bit) 44.1 kHz CD format is done using Apple Lossless Compression (to .m4a) or AIFF. If lossy (mp3, aac) compression is needed, the pristine audio files can be compressed by converting via iTunes.