If you consistently sample the amplitude level of the continuous analog sine wave over time, you can store this data and call upon it at a later time such as when you want to play back what you've recorded.
Sample rate is the number of times you choose to sample an analog signal over the span of one second. The higher your sample rate, the more the analog signal is sampled over the span of one second.
Common sample rates include In the analog realm, amplitude can take on an infinite number of values because wave forms are continuous; in the digital realm you need to limit these values.
A big reason for doing this is to keep files a manageable size. To calculate the amplitude resolution for a given bit depth, you use the formula 2 to the power of n , where n is the bit depth. The only difference in audio quality between a 16 bit file and a 24 bit file, if you've applied dither, is the amount of noise. Dither helps to eliminate quantization error.
To test this, you can phase cancel your 16 bit file and 24 bit files with one another; the result is just noise. If anything else were different, you would hear it. Many songs have a bit depth of 16 because it keeps the file size down, and 16 bit Now, a bit depth of 24 is mostly used when uploading songs to streaming services like Spotify and Apple Music. By plotting points along the path of the analog signal, you end up with a series of data points that resemble the path of the original analog signal.
If a point were to land in one of these spaces, it would be quantized to the nearest X-Y crossover point. You'll notice in the example above that hardly any of the points actually fall perfectly on the continuous sine wave.
The amplitude of each sample is quantized to the nearest possible value; the inaccuracy that results of this is known as sampling quantization error. To limit the negative effects of sampling quantization error, you can increase your sample rate and bit depth; the result will be a signal that is truer to the continuous analog sound source. Your computer stores the data that it collects from the process of sampling and can call upon the information when it needs to use it.
You can hear it many of Pantera's tracks as well. There's plenty of recorded examples of double stop bends in which a 3rd note is audible though the guitarist only played 2.
This is due to the very nature of distortion. Distortion brings out harmonics. In the case of a harmonic played, you are dealing with a signal with a weak fundamental. Given the fact that distortion brings out harmonics and its compressing nature, I think you are simply hearing the natural effects of distortion. Regarding double stops, intermodulation distortion is absolutely audible and would account for a thrid note being heard when only 2 were struck look it up if you doubt the phenomena.
IME, the Kemper reacts more like one would expect an analog system to sound than what I would expect digital aliasing to sound. I'm not saying CK and crew have created a absolutely perfect product, but be careful what you ask for. Let's hold the Kemper up against real world examples of what real amps sound like versus a perfected ideal. The third effect is what's heard on the Maz 38 with the preamp cranked. A lot of amps do this and is considered normal.
I remember hearing that on cranked amps 30 years ago. What I'm talking about is when you hold one note on one string and bend another at the same time, most obvious on high notes. What you hear is a note lower in pitch and level than the notes you're playing and seem to go in the opposite direction. As you bend up you'll hear this "difference" note going down. Amps with nice big output transformers seem to do it the most.
Turn the bass down and it'll reduce the effect. It's a normal thing to overdriven amps. Again, I'm not saying the Kemper is without flaw nor that there isn't room for improvement. Noob question: What does aliasing sound like? Start new topic. Recommended Posts. Posted October 3, But what i honestly don't know is how aliasing sounds or maybe rather what i should listen for - even though i do have 3 unashamedly digital synths I guess it is because i mainly do weird sounds on these synths so that any weird frequencies get masked by the general weirdness i program in the first place So does anyone of you have an audio example of a single sound that does alias?
Link to comment Share on other sites More sharing options I can try and make some samples today. Delicious Lamprey Problem Posted October 3, This is from Wikipedia: Temporal aliasing is a major concern in the sampling of video and audio signals. So does anyone of you have an audio example of a single sound that does alias? ElectricPuppy Posted October 3, Particularly the freepers.
Those can get some nasty low-end alisasing. Never trust a fart. DXelectro Posted October 3, Acid Hazard Posted October 3, P Posted October 3, Anyway, here's a quick example of some V-Station Aliasing. Yoozer Posted October 3, In most cases, this is more than enough headroom to avoid aliasing, though you can choose to record at 48 kHz for a bit more safety while also keeping file size relatively low. Digital Audio Basics: Aliasing Explained.
Understanding Aliasing When a signal is sampled by a digital recording system, it winds up being band-limited. What does aliasing sound like? How to avoid aliasing To prevent aliasing, all you have to do is record with an adequate sample rate. August 1, Leave a Reply Cancel reply Your email address will not be published.
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