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In principle, there’s no reason a digital file should produce lower-quality sound than a vinyl record. The waveform on the left represents a low-pitch note, while the waveform on the right represents a high-pitch note. As more complicated sound is made (for instance if I speak), the strength of the pressure changes to control the volume and make a pattern (like a word). Now that we understand a little bit about how sound works, we can talk about how it’s stored on a computer. The original sound wave (left) is discretized with a low sampling rate (middle) and a high sampling rate (right). Sound is recorded on a vinyl record by copying the shape of the sound wave onto a groove on the record.
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It seems I’ve made some serious errors when discussing the technicalities of music recording, both digital and vinyl. There is actually a big difference between lossy formats and lossless digital audio formats (which may be in fact compressed; see FLAC).
The MP3 codec, for instance, is a lossy format that relies on a model of the human auditory system to estimate portions of the waveform that are difficult for the human ear to notice. As an experiment, try converting a WAV or other lossless format into pairs of files of similar sampling sampling rates (be sure to disable VBR — how to do this depends on your encoder).
The sound information is actually recorded by motion on the other axis, wiggling the groove to the left and right (that is, radial motion relative to the center of the record). I do a lot of work involving signal processing and the relationship between sampling rates and signal bandwidth.
I intentionally glossed over the trade-off between frequency and time resolution given by Fourier transform.
Enter your email address to subscribe to this blog and receive notifications of new posts by email. Though there are no real rules when it comes to buying or selling vinyl, which is why you would want to know if the item was an original or not, there are things that are accepted as rules, which all collectors and sellers should follow.
This might sounds like a no-brainer, but the truth is, many people will buy records that are touted as viny,l only to find they aren't. For example, there was a throwback to vinyl in the late 1990s and early 2000s, and many bands decided that, in addition to their CD versions, they would do a vinyl pressing; however, not all bands did this, and not all albums are available on vinyl. Another thing that you can do when it comes to determining if a vinyl record is an original pressing is to find out when the album was first released.
You will also find that you can learn a lot about a record by considering the catalog numbers. Like catalog numbers, matrix numbers can help determine if an album is an original vinyl pressing or not. With all of these considerations, you can get a very good idea whether or not an album is an original vinyl pressing. With the jacket, you want to look for ring wear, mold, seams that are splitting, and wear and tear, including anything written on the album. The first thing to look for when buying vinyl records on eBay is whether the seller is displaying photos of items like matrix numbers, catalog numbers, and the record itself.
Also, take a look at the shipping information as well as any insurance information before you buy. When it comes to original vinyl pressings, making sure that you are determining the originality of one of these records is imperative if you are going to add them to your collection.


By keeping all of this in mind, you will be able to buy even the finest mint vinyl available for your collection as well as discover great deals on eBay.
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In a real song, there will be many notes at once, and the note will change as the song goes on, so the change of the higher-frequency wiggles will change. Because the computer can only hold a finite amount of information, some of the waveform is necessarily lost. The large blue dots indicate that the computer is not quite sure what the strength of the sound wave is. The shape of the groove mimics the shape of the pressure wave, just like the plots I’ve shown you above. By not recording those notes, we can reduce the size of an audio file without any obvious change in audio quality.
However, to conserve space on hard drives, we often compromise between audio quality and memory usage. The groove actually looks like a tiny graph of the sound waveform, big enough to be seen with minimal magnification (well known to oldsters like me who have handled a lot of vinyl records). One way to determine the possibility of a record being pressed on vinyl is to look up information about the release of the record. This is why it is so important to do a little research to determine if the record you want was actually made on vinyl.
Once you have that determined, you probably will also want to determine its value, especially if it is meant to be part of a collection. As with anything, however, when you shop eBay for collectibles like these, you will want to keep a few things in mind. It doesn't matter if you are new to collecting vinyl or a pro, this is information that is very important and can help you decide which albums you want to buy when you come across them for sale.
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Why this is the case has to do with how sound works, and how sound is stored on a computer file. I apologize to everyone I misinformed earlier this week, I should have corrected the erroneous information now. Lossy compression makes use of interpolation and other tricks to approximate the original lossless digital signal, whereas lossless compression makes use of inherent redundancy of the digital information.
It turns out that formulating accurate models of psychoacoustics is difficult, and people vary, which makes this process imperfect.
On monaural records that’s all there is, but on stereo recordings the depth of the groove actually records stereo information, specifically it represents the difference between the two channels. I think many might be interested in your explanation, so please do correct me on sampling rate and signal bandwidth. If so, you probably know that original vinyl pressings are some of the most valuable records out there. If you do find these records on vinyl, they are not originals, and, therefore, would not be worth anything when it comes to value.
For instance, the Beatles album, Abbey Road, was first released on vinyl in 1969 from Apple Records.
This can be a bit tricky; however, many labels have been swallowed up by larger labels over the years, and the label numbers can have some overlap.


The matrix number is used during the manufacturing process to determine side A from side B, but can be very helpful in determining the authenticity of an album. Even if a record has the same catalog number, the same release date and pressed on vinyl as an original, it still may not be an original. Some of the changes may be very subtle, but in many cases, you will notice a difference when it comes to colors or layout from one version or another. Today, a number of flooring ideas are available in the market which are extremely good and are capable of providing a sparkling look to the modern homes. These tiles are manufactured by a great number of manufacturers and that is why the users can have a comparative reasoning before buying a certain vinyl floor tiles. Imagine that I hold a string between my two hands, and I move my hands so that the string wiggles. The computer also doesn’t have perfect ability to keep track of the strength of the pressure of the wave at any given time. Once the sampling rate is high enough, and the resolution good enough, we can’t tell the difference if the sampling rate is higher or the resolution is better. In the end, whether or not a digital file has a lower-quality sound than a vinyl record depends on the person who produced the file.
So there’s no surprise that many people hear significant difference with such codecs. Listen to the sea-alien sounds that start to happen when you start cranking down the MP3 bitrate.
There is no sure-fire way of finding out if a record is an original vinyl pressing, but there are certainly methods that are used to gain a very educated guess.
The nice thing about catalog numbers is that there are databases online that will allow you to look them up. In this situation, you will want to find the original album art in order to decide if the vinyl is an original. These floor tiles also include modern wooden floor tiles which are extremely sophisticated for the modern homes. Similarly, the sampling rate is determined by the width of the needle that cuts the groove. Now, you can certainly find the 1995 version of Abbey Road, but it would not be considered a collector's item, nor would it be considered to be an original vinyl pressing.
This can help you identify the label; then you can go back and do some more research to determine if it could be an original or not. They make the rooms noiseless as they have a layer of rubber which makes these tiles noiseless. The needle tip cuts a groove the same width as the tip, and we lose all information about how things change under the needle. I will do my research more thoroughly the next time I explore a subject I don’t know well.
The number of times the computer measures the strength of the pressure wave is the sampling rate.



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