Pure Vinyl 4 includes more than 60 new features and user interface and performance improvements.
Just a few of the new features added in Pure Vinyl 4:
• New free-form Track Name / Track Time entry window
• Simplified Recording Setup user interface
• New Album List shows all recorded albums
• New Seek to Preset Side and Track when a recording is opened
• New Time Remaining feature assists recording: alerts to stylus reaching end of album side
• New Sound Looping for easier, faster fine-tuning of track marker locations
• New, super fast automated track creation using the Auto Track Finder and Track Name and timings entered during
• New Snap Stylus To Track feature for easier track editing
• New Tidy Tail feature automatically trims silence at ends of tracks
• New Render Each Album Side as Single Track option
• New Normalize Using Per-Track Peak Levels
Pure Vinyl 4 also incorporates an under-the-hood preview of the next major update of Pure Music, incorporating dozens of
additional improvements, new features and performance enhancements. Much more will be revealed (including a new user
interface for Pure Music) when Pure Music 2 is released.
Linking analog LP playback with the precision of high-resolution digital music reproduction
LP Playback / Recording / Editing / Archival
• Precision Optimized 64-Bit RIAA Vinyl Correction Curve (IIR design, with phase response identical to analog RIAA
• Directly links audiophile caliber analog vinyl playback and the advantages of high-resolution (192 kHz / 24 bit) digital
audio reproduction and recording / archival
• Single point of integration for analog and digitally sourced music
• Supports 192 kHz 24 bit Sampling for State of the Art, High-Resolution Digital Quality
• Painstakingly Designed to Preserve the Warmth, Clarity and Dynamics of Vinyl Reproduction
• Pristine, 64 bit (Double Precision) Floating-Point Internal Signal Path for No Added Distortion 6
• Helps Optimize Turntable Setup by Providing a Repeatable Baseline: Just Record and Compare
• Unique, "Scratch" Style, Grab & Spin "Vinyl Cueing" Nondestructive Audio Editor
• Cueing Trigger "Noise Gate" feature Automates Recording Process; Just Lift Stylus and Flip the Record
• High Quality 64-Bit Sample Rate Converter for Exporting CD Format Tracks to Digital Players (iTunes, iPod, CD-R)
• ZEPHRR® Zero Phase Shift 64-Bit Rumble Filter for Resampling; Adjustable Frequency, up to 96 dB / octave slope
• Adjustable Noise-Shaped Dithering for Word-Length Reduction
• Built-In Correction Curves for pre-1955 Vinyl / Shellac
• NetSend for Streaming Audio to Other Computers (up to 192 kHz, 24 bit, uncompressed)
• Nondestructive, Integrated Pop and Click Editor / Peak Finder
• Ultra High Quality Integrated Multithreaded Sample Rate Converter
• Virtual Line-Level Preamplifier / Source Selector (for audio interfaces with more than 2 analog input channels)
• Built-In 2/3/4-way Crossover (with 64 bit internal resolution and Adjustable Time / Phase Alignment) (for audio
interfaces with more than 2 output channels)
• AudioUnit Plug-In Support (add parametric / graphic EQ, etc.)
• "Picture Disc" Feature (Integrate Album and Label Artwork with Vinyl Image)
• Space-Saving Rendering of Virtual iTunes "Bookmark" Tracks For Playlists from Vinyl Recordings (Without Creating
Separate Physical Tracks)
• Also Built-In: Channel D's Acclaimed Pure Music Digital Music Player
Playing LPs with Pure Vinyl
The PLAY mode of Pure Vinyl was designed to closely recreate the experience of vinyl playback. Just as in the editing
process, the stylus can be dragged and dropped anywhere on the surface, to cue a particular track. This is made simple by
employing the spinning vinyl record metaphor. To flip the record, juct click on the label. Records with more than two sides
(double, triple, etc. albums) can be used with the player - each click moving to a different side of the next disc.
Pure Vinyl also can automatically "flip" the record at the end of the side - for uninterrupted playback in "album" format.. but better,
because there's no stylus wear with repeated play, nor a vinyl surface to scratch. Every play sounds like the first one - at
super quality 192 kHz 24 bit.
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... high-quality output is provided for flawless monitoring while
recording, using the software-based EQ, if desired.
The adjustable, threshold-based triggering feature 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
triggering pauses 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 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), if creating track files in other formats is desired, is
properly performed, using widely vetted techniques. For example, 192 kHz audio is first upsampled and zero-padded, then
antialias filtered and decimated.
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.
Editing Digitized LPs with Pure Vinyl
The inherent surface noise of vinyl makes track cue assignment difficult, because music fades are contaminated with
surface noise. Linear-style waveform editors are not quite up to the task of working with digitized vinyl. Using apparently
quiet waveform locations as track boundaries, without careful auditioning of selected marks, is likely to result in track
marking mistakes. Pure Vinyl uses a patented "virtual vinyl" cue guide image generator coupled with a DJ-inspired
"scratch" technique where the record is "grabbed" and "spun" to accurately locate cueing points. A Looping feature allows
precisely honing or verifying the locations of track intros and fade-outs.
Pure Vinyl's proprietary SNAPTO Automatic Track Locator, not found in any other software product, makes quick work of
the potentially tedious task of locating track cue-ins. LPs do not fade to "digital black" between tracks, making track
location much more difficult than editing purely digital recordings. However, our specialized track locator algorithm handles
this difficult task with aplomb. Likewise, the Tidy Tail feature automatically trims silence from the ends of tracks, even in
the presence of gradual fade-outs in recordings.
Fixing Vinyl Flaws in Pure Vinyl
Pure Vinyl incorporates features to streamline this tedious (but ultimately rewarding) task. Iconic overlays applied to the
vinyl image accurately depict audible blemishes and peaks. Interpolation and sample cloning can be used to clean them.
The peak finder is invaluable in setting proper levels. Just click on a peak in the list (generated automatically during vinyl
rendering) and the record rotates and stylus moves to the exact location of the peak / pop on the disc image.
"Fixed" edits can be incorporated nondestructively during playback of high-resolution master transcription (if used). Pop
fixes can be applied when exporting individual tracks. Again, the original file is preserved, and you always can go back and
modify your edits. Third party software can be used with Pure Vinyl music files for overall restoration or noise reduction, if
The peak/pop editor also can be used to "calibrate" the "rotational speed" of the vinyl image. Turntables are subject to
rotational speed error. However, the periodic nature of the scratches on the record surface can be used to advantage. At 33
1/3 RPM, a scratch or blemish across two or more grooves will be repeated at an interval of exactly 1.800 seconds. A
future release of Pure Vinyl will incorporate this into precision pitch correction of exported music files (that is, when we are
satisfied with the quality of the resampling algorithm we are developing).
After track assignment is complete, the individual tracks can be exported automatically as AIFF or Apple Lossless
Compressed sound files for incorporation into digital music players, such as iTunes. Alternatively, track edits can be used
with Pure Vinyl's powerful, patent-pending "bookmark" track feature in iTunes that points to the master recording file,
allowing incorporating vinyl tracks into iTunes playlists without needing to waste disk space on separately rendered track
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