We transfer to many digital formats.
Your Preservation Master can be a standard audio CD (16 bit/44.1) We also write high resolution file as 24 bit /192 khz as a .bwav file or .aiff, or mp4 .mp3, aac or whatever. We can put your information on an Optical CD, DVD, jump drive, hard drive, or remote server. Many times we transfer to several formats at once: like to an archival grade CD, & an mp3 for the web. Please call & ask our engineers to give you a custom quote.
About our Audio Restoration services
We offer many years of experience for the improvement of degraded or poorly recorded audio.
With our software tools we can dramatically clean up recordings & transfer them to DVD for permanent storage. We've provided audio restoration services for the government. We have resurrected many family tapes and made relatives very happy. With our advanced computer tools we can filter noise, lower hum, buzz,, hiss, clicks, pops, & other undesirable sounds. We can reduce hum & noise so recordings of loved ones can be heard again.
While we can't always turn lead to gold, we can make significant improvements in sound intelligibility.
Restoration services requires constant supervision by the engineer.
The studio rate may vary upon the situation but is typically $25 per quarter hour.
Editing Cutting out extra spots you don't want. Gluing together those you do. Smooth the transitions etc.
Call us to schedule some time with our expert engineers to deliver the product you want to hear! $25/quarter hour • $25 minimum.
Deposit Required prior to doing work. We take all major cards.
Estimates We would be happy to help you get an idea of a rough cost estimate in advance. call us at 503-228-2222.
Once you give the approval for the start of any project if for some reason you have an upper limit on cost you MUST make it 100% clear before we start the work at all or you will be liable for all work completed before that time. In other words please don't make us do all the work and change your mind and not want pay the bill 'cuz the restoration of Aunt Mildred took more work than anybody expected. Call us to talk to you when you send in your tape.
Rush Fee +50%. We'll work late but you gotta pay us.
Turnaround Typical 5 working days. But bear with us - because we do such good work we're very popular, so your particular project could be a special one and take a little extra time and we give each project the attention it demands.
We do not archive your project in our computers but typically retain a copy of the CD files for 14 days in case of makegoods.
We can ship your completed Discs via FedEx 1, 2, or 3 day air or FedX ground services. We are not responsible if a time sensitive shipment is messed up or lost by the shipping company. We encourage you to have us insure all shipments against damage. It's worth it.
Via the Web We also can send your project when it's completed, as files via the web directly to you. We have high speed internet. You can send your files as aac,mp3, aif or wav. This virtual web restoration service is billed at standard engineering rates.
Just call 503-228-2222.
Mail your project to :
CDPDX / Superdigital ltd. 1150 N.W. 17th Portland OR 97209
Ready when you are!
Do you have an old audio tape you want to send us?
Please read this!
We provide this information as a service to those of you who find an old tape in a drawer that you think might be Grandpa.
It is a little harder than you think, to ascertain what is on a reel or its running time just by looking at it. The tape could be recorded with several different technical parameters.
Speed: This refers to the speed the recording was made at.: 1 7/8,
3 3/4, 7 1/2, 15, or 30 inches per second. The faster tape speed, the better the fidelity.
Several different speeds could be found on your reel tape.
Cassettes just go one speed at 1 7/8 ips.
Track Configurations: Quarter track (1/4 track) was 2 tracks in one direction, then you flipped the tape for 2 tracks in other direction. That's how consumer decks got 2x play time out of tapes.
All old tapes that you could buy in a record store were 1/4 track. The tape heads were stereo to play it depending on which side of the tape you played. Most all consumer decks of the late 60's and 70's were 1/4 track.
confuse 4 track with quarter track. 4 track might mean 4 discrete
tracks or 4 channels like on an old Tascam 488 cassette.
Studios normally had half track ( 1/2 track ) decks meaning left took up half the tape & right took up the other. "The more tape real estate to magnetize = better signal to noise ratio."
8 track refers to the old car stereo cartridges that had 4 stereo pairs of music so they could use less tape. These things had a lot of crosstalk and were not of the best fidelity even though they actually ran at 3 3/3ips.
8 track also could refer to the series of 20 year old Tascam & Otari 8 channel recorders that used 1/2" reel tape. There's still a lot of them floating around in budget studios, but digital has obsoleted them. These were used for recording bands not music playback purposes.
Size of the reel could be: 2",3", 5", 7", or 10 1/2"
Noise Reduction: If marked "dbx noise reduction" it needs to be decoded. Dolby noise reduction is used for the same purpose. We must decode it with our equipment, otherwise it will sound weird. Reel tapes were encoded with dbx Type 1 quite commonly in the 70's thru 90's because it was a good inexpensive way to minimize tape hiss for small studios.
Some reels and cassettes were encoded with dbx Type 2 which is similar to dbx Type 1 but with limited bandwidth.
But it makes a difference to us in what unit to use. If you need a tape transferred to CD we can do it CORRECTLY!
Condition of tape: Some play perfectly. Some need to be "baked." Tapes that physically squeek or squeel on our machines are symptomatic of this illness. And need to be dried, the tape has deteriorated. This occurs when oxides stick to the deck's magnetic heads & guides. The tape heads & guides then build up a dirty residue during playback. The result: distortion, and fuzzy sounding, inaudible audio, & squeel.
If the tape has white power on it likely it's mold. Not some leftovers from that party in '74.
We can get almost all tapes to play.
We can playback commercial studio recording from the past : Fancier studios encoded tapes with Dolby A noise reduction. Dolby Type A was used a lot until Dolby SR came along in the early 80's. Dolby SR was the best of the analog tape noise reduction schemes and only used in studios for master tapes. Dolby® also made Dolby Type B for cassettes which was the most popular. Dolby Type C & Dolby S came along and was found only in expensive cassette decks. Dolby B is the only one that can be played back without the tape sounding messed up. We have all these decoders for playback of noise reduction formatted tapes. (Except Dolby S for cassette which just about nobody had.)
Estimate of costs: Many tapes that we get that are home recorders are 'all over the place' so we never know how much material is on them. There could be speed or head track variations, so we cant tell on old tape until we actually play them to get a rough estimate for how long they are or what shape they are in. If you have an upper $ limit you must make this clear when you place your order.
Information: We need to know what is written on the tape box (date, length, title,etc.) . What you want to be transferred (if only part of the tape).