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Digital recording demands some tricks to avoid analog and analog-to-digital conversion overload distortions, that can not be fixed after record. However, reducing of analog signal level at analog-to-digital converter ADC input can cause worse signal-to-noise ratio. Especially, for low-level fragments of a musical piece. In general, noise level of digital representation of an analog signal quantization noise , should be lower, than ADC's own electrical noise relative overload level.

We record a symphony orchestra in 2 microphones. To avoid overload, we reduce input analog level of ADC. It give some loudness reserve. But it degrade signal-to-noise ratio of quiet musical fragments. More reserve is more the degradation. If we use lower bit depth resolution, it can cause quantization noise, that is higher than [electrical] noise floor of the DAC. And the signal-to-noise ratio get more degradarion. However, resolution of further digital signal processing DSP , may be increased, to "transparent" for DSP designers work with sound.

Read more and details in " Does 24 bit sound better than 16 bit? There are many questions about the necessity of hi-resolution musical recordings. One people thinks, that "excessive" resolution waste disk space only. Other people think, that such records are needed to produce ultrasound. But, by author opinion, existing of high-res may be useful and have other reasons. Read " Myths " part below. High-resolution audio file formats sample rates. High-resolution music file formats bit depths.

Opinion, that high res gives advantages always, is not correct for all cases. Sometimes people, who play records with high sample rates, stumble with unexpected noise or other unwanted sounds. In " Myths " part you can watch the video with example. Separate [DAC-headphone amplifier] device may be used to connect to a mobile phone, portable player, computer and etc. High resolution audio solves issues of non-linear distortions primarily.

However, it is one dimension of the sound naturalness. Second dimension is spatital distribution of acoustic waves in the listening point. Read details It's only one of many factors. But it give potential technical abilities to improve sound quality. When bit depth is discussed, human hearing range about dB from inaudible to pain is taken as the reference value. It looks like enough to cover almost full range dB. As an example, we want to provide proper sound quality like tape's 60 dB at 0 dB audible level.

So we can add about 60 dB to dB total about dB to provide allowable quality at lowest levels. Why depth, higher than 16 bit, is need. It is not exact numbers, because the author doesn't have a result of researches. But we can get it as the hypothesis. Direct Stream Digital solve the dynamic range issue via noise shaping. And we begins to listen these places better way. But noise is boosted together with music. And it degrade sound. To reduce noise of quiet places of the piece, we should reduce noise level there.

If bit depth is bottle-neck, we can do nothing. However, the reserve is considered abstractly. Real-life filters are analog. And have wide transient band. To solve the a wide transient band issue, digital filters and higher sample rates or oversampling are used. To reduce necessity in "hard" efforts to proper filter transient band, higher sample rates including DSD may be applied.

High res is not intended to recording and playback of ultrasound. Analog filters are not steep and can't suppress aliases properly in allowable band 20 Higher sample rates allow placing aliases at higher frequencies, in better suppression range of the analog filter.

However, an issue with the quality of filtering may be there due to limited computing resources of hardware. And ultrasound playback is sequence of higher sample rates. Ultrasound playback is not target of hi-res records. Practical experience, that may be checked right at home, says, that we can't hear sines with frequencies above And there no surprises for number trials.

This study doesn't found a significant difference between samples with and without very high-frequency components. However, the authors of the research neither confirm nor deny a general human possibility to discrimination of music with and without the components. Some of the studies show, that we may have a brain response to ultrasound. But, it is unknown, how ultrasound impact to sound quality.

Digital signal doesn't cause "stairs" in any resolution. Because analog filter at output works as interpolator connect momentary voltage values of digital samples via smooth curve. For high resolutions, interpolator analog low-frequency filter is easier to implement in better quality see myth 1. As rule, such comparison considered as a blind test of samples provided by a label in different resolution.

As an example, we split signal from microphone to 2 audio interfaces, that works in different resolutions. But we can't split absolutely identically. Identity of two interfaces is more sophisticated task, than the splitting. When a single sample music album is converted to test with software , we don't know that we compare: converters or resolution. But, even, when converted samples are played back at single DAC, it may works in different modes electrical circuit, digital processing for various resolutions.

High-resolution formats contain ultrasound. Theoretically, it is does not matter for ears, because we don't hear it. But, practically, musical hardware and, sometimes, software have non-linear distortions. It can cause audible products from inaudible high-frequency components intermodulation distortions. In general case, higher sample rates and bit depth guarantee nothing. Result depends on implementation quality.

A professional audio interface at Hz can give better sound, than a built-in sound card at kHz. If consider altering of resolution resampling as itself, it lossy processing always. And the system may have different distortions for various modes combinations of sample rates and bit depths. So, we can optimize the recording to better playback mode: choose the mode with minimal distortions. To reduce conversion losses, audio conversion algorithm should have minimal distortions.

However, it needs to remember, that sampling rate increasing don't give advantages at its own. Theoretically, in some cases, reducing a sample rate may make sound better.

In other cases, no audible difference between resolution. Each case should be learned individually. But these formats are intended for music production and scientific purposes rather. Only part of the DXD spectrum contains useful musical signal. Noise level is growing with grow of frequency. However, there are PCM lossless formats may be used too. Traditional PCM has no significant noise level grow at high frequencies. More about DXD here. As rule, it has compression ratio better, that FLAC.

But, as the author know, MQA is not lossless no losses of information after restoring of sound from compressed stuff. Read details here. Also read about MQA.

Read more what is the best hi-res music format? All these formats give musical system designers the same abilities. Final result depends on how music system is done. PCM has no technological noise "hump" at high frequencies. However, we don't hear ultrasound see details below in "Myths".

And the noise is not audible. Nevertheless, musical system hardware and, sometimes, software have non-linear distortions. The distortions can cause the generation of audible products noise, as rule by inaudible noise.

It's called as intermodulation distortions. Highest quality music formats are lossless formats, that capable save original digital data without losses. Actually, it depend on implementation of equipment and played recording. Hi res audio solves However, high sampling rate and bit depth guarantee no higher quality. Just it give potential possibilities. Read more See list of online hi-res streaming services here.

Hi res audio give abilities to get more transparent sound due to lesser distortions. You can try this way to check it However, due non-linear distortions of some equipment, high resolution records can cause additional audible issues noise, as example.

It depend on quality of upsampling and your playback audio system. In general case, higher sample rate has better potential for lower distortions in a DAC. High-res audio can "open" more sound quality of your audio system.

However, there is no any warranties, that hi-res bring better sound. Distortion level estimate degrading sound of an original source. But not only integrated level of distortions is matter, but the character of the distortions makes subjectively perceived sound quality. This phenomenon is studied by psychoacoustics. Subjective estimation can more like more degraded sound. Because some kinds of distortions can bring "warmth", "coziness", etc. Resume: The best sound is zero distortions. But some distortions can "enhance" sound "beauty" "colorization".

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European editions of several of the CDs contain extra songs that are not found on US pressings some of these songs do not Please message us through email! Topics: Soundcloud, video. Si va dagli inizi romantici e la canzone di protesta Folk-jazz fusion featuring strings, piano, and drums? You betcha! Many tracks are available in three versions: short, medium, and long. In addition, we offer many stems single player. Still can't find what you need? Contact us for customized or exclusive content at: hello sonicitysound.

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