Questions tagged [sample-rate]

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12
votes
10answers
14k views

Should I use 44.1KHz, 48KHz or 96KHZ sampling frequency for hobby projects?

I use a firewire audio interface with a decent microphone pre-amp and the ability to sample up to 96KHz in 24-bit. I get why I'd want to use 24-bit for the added dynamic range, especially when using ...
8
votes
2answers
2k views

How is it possible to hear something at 44.1Khz?

Since our hearing range is said to be 20Hz to 20,000Hz. So, how can we possibly hear something at 44.1Khz? Or do we hear only half of the sound produced at 44.1Khz by any audio CDs? What is going on?
7
votes
4answers
9k views

WAV file recorded with wrong header

I have some WAV files that whose actual sound contents are at 44100Hz, but the headers incorrectly state that the sample rate is 48000Hz (I think this is due to the DAW setting its own sample rate OK ...
7
votes
3answers
16k views

How to convert a stereo MP3 to mono MP3

We had an MP3 created for a message greeting on our phone system. It is stereo MP3, not sure what the bit rate is, but is sampled at 44.1k. Our sound system requires it to be in this format: 16 bit ...
6
votes
7answers
3k views

What sample rate do you use/prefer?

First question so apologies if it's not up to scratch. Feel free to let me know :) I'm wondering what sample rate you like to record at and what the sample rate generally is of any sound effects that ...
6
votes
9answers
4k views

What's your method of making time slow down?

There are a number of different ways to make audio slow down. I'm talking about sound that slows (and pitches) down to a stop, much like if you were to stop the motor on a record player without ...
5
votes
10answers
5k views

What's your strategy behind 192kHz recording?

Lots of us record at at 192k for the 4x sample rate improvement, but how does that translate to a more useful or flexible sound file? According to Tim Prebble, plug-ins are more effective at 192k (...
5
votes
1answer
8k views

What is the proper way to reduce audio sample rate and bit depth?

When presented with a lossless audio file, what is the proper way to reduce sample rate and bit depth? When reducing bit depth, I understand that I should apply dither, but I don't know what scale or ...
4
votes
5answers
3k views

What sampling rate and bit depth would be necessary to make a digital recording indistinguishable from the original?

I'm assuming this is a solved question (please cite sources). It seems like a 96kHz sampling rate with 24-bit samples is standard for high-resolution audio, but is this considered to be ...
4
votes
6answers
488 views

Why do some companies still sell SFX with 44.1 kHz sample-rates ?

Hi, I was wondering lately about differences in samplerates of wellknown sound libraries. Why does Sound Ideas, or other sound sellers, still deliver their libraries at 44.1 kHz instead of 48 kHz, ...
4
votes
2answers
8k views

Why do mp3 have sample rate?

So my understanding of mp3 or any lossy file format is that a lossless audio such as wav will be sampled at some rate i.e. 44.1kHz and the mp3 will compress each second of that to a constant rate of ...
3
votes
10answers
2k views

When will films be mixed at 96K?

When do you think it will be standard to mix a film at 96K or possibly 192K and have it stay at that sample-rate? Will Feature Films ever make the jump to 96K rather than stay at 48K? Also, when you ...
3
votes
3answers
925 views

Upsampling Sounds Prior to Processing

Let's say you've got a batch of raw sounds you're working on for your library, making versions of them that are more 'production ready.' Let's say that these sounds are 44.1 KHz / 16 bit. I find ...
3
votes
2answers
3k views

How do I correctly slow down the track to compensate for wrong sampling rate?

I have some ripped tracks from an audio CD which originally had the music in 44100Hz bitrate, but it's encoded as 48000Hz. The pitch is definitely higher and so is the speed. How do I properly reduce ...
3
votes
2answers
478 views

How is compression quality related to sample rate?

The higher the sample rate is, the better the compression quality will be. That seems to be the conclusion to draw from several dynamics plugins I've worked with that implement oversampling (in this ...
3
votes
2answers
2k views

Sound Card Design: Why 96Khz/24bit?

I'm in the process of designing a soundcard. However, I'm a little confused over one aspect. The primary usage of the soundcard's output will be playing 320kbs mp3s through a program (Traktor, VDJ, ...
3
votes
4answers
3k views

48kHz vs 44.1 kHz

I've been brought on for editing audio on a project (the audio isn't going to a video at all it is just for the audience to listen). The recording engineer has recorded this audio at 48 kHz, even ...
2
votes
2answers
356 views

Sync Issues and sample/bit rates

Hi, ive been recording sound for a tv show recently. I record the sound separately to the camera using portable recorder and a couple lapel (wireless) mics... Checking that on the camera their ...
2
votes
4answers
2k views

Sample rate for FX question, 48k or 96k

Hi, I'm a little confused on sample rates for fx recording and thought I'd post here. I'm recording some fx that I want to use in a variety of contexts, sound design material and for music. I want ...
2
votes
2answers
320 views

Is there any tradeoff to get the best quality/file size ratio for mp3 conversion?

We record vocal sound via the Creative - Sound Blaster X-Fi Titanium HD soundcard and its dedicated recording software. the settings are : 96 KHz 24 bit depth I would like to convert it to mp3 with ...
2
votes
2answers
257 views

What are Your Preferred Bit/Sample Specs for Commercial Libraries?

Over the past 10 years I've been making most of my living doing stock libraries, patches, virtual instruments etc which were geared pretty specifically toward musicians. These days though, I'm doing ...
2
votes
2answers
618 views

Sample rate options on field recorders

I think this is a variation of the question that has been asked over and over, but I want to be sure I'm doing the right thing before buying a new field recorder. Currently I use the Tascam HD-P2 ...
2
votes
1answer
351 views

Mixing audio with different sample rates

Given multiple audio streams, I need to mix them into a single stream. I know that in principle all I need to do is add the corresponding samples. The issue is: The "input" streams have different ...
2
votes
3answers
78 views

Is it possible to record higher frequencies using multiple microphones sampling in lockstep?

I have only a basic understanding of audio, so this may be somewhat naive, but is it theoretically possible to record frequencies above what microphone allows by using multiple devices sampling in ...
2
votes
1answer
71 views

What is the real time from sample number?

I apologize if this is the incorrect forum for my question, so please point me to the right place if it doesn't belong here. I thought I understood how SMPTE timecode works, but I cannot seem to ...
2
votes
1answer
8k views

How to get number of Frames(or Samples) per sec or ms in a audio (.wav or .mp3) file?

some of the terms are but technical but please bare with me I've been observing an audio file under an Python language module the audio has a framerate/samplerate of 44100 per sec or hz and total ...
2
votes
1answer
559 views

Pitch-Shifting makes sample sound out of tune

I recorded a guitar sample using a seemingly in tune guitar, and the raw sample sounds in tune also. However, when I pitch shift the sample down by EXACTLY 400 cents (using FL Studios built-in pitch ...
2
votes
1answer
99 views

Is it possible to fake decimation with FM?

Decimation, also known as sampling rate reduction is a creative effect that creates harsh aliasing, by "resampling" audio signal without an anti-alias filter. It works by performing sample-and-hold, ...
2
votes
0answers
61 views

Max audio sample rates? [duplicate]

I work as a sort of multi-purpose engineer/developer at a very small startup game company. Recently, I've been asked to help out with audio development and editing, and I've been mostly able to hold ...
1
vote
1answer
713 views

sampling rate in .wav file

Hi everyone! I'm a newbie in sound generating and currently I'm coding assembly for playing a .wav file. What I have learned by all my searching is that in the structure of a .wav file there is some ...
1
vote
2answers
3k views

Sampling frequency Vs. Audio Frequency

If I record something that is at 500Hz audio frequency then the sampling frequency will still be 44.1Hz. How does the 500Hz audio frequency fits with 44.1KHz sampling frequency? If the sampling ...
1
vote
2answers
191 views

Why I hear shrieks that have the same pitch as sample rate when the frequency of the signal is very small?

Usually, human can't hear sound with a frequency lower than 20 Hz, but what's confused is, some very slight shrieks generate after I sampled a 1 Hz sine wave with a high sample rate. To be precise, ...
1
vote
1answer
343 views

Verification of upsampled audio file

I hope this is the correct forum. I started to do some programming involving sound recently and have encountered a lot of technical terms that are all foreign to me. I am slowly learning about them ...
1
vote
4answers
1k views

Batch changing bit and sample rate

Here's something I never thought I'd do here... ask a question related to my day job. :D I'm a technician in a nursing simulation lab -- I get to play with human simulators all day -- and I've ...
1
vote
1answer
35 views

What's the lowest analog audio sound that a CD/44.1kHz audio system can make?

CDs, and other 44.1kHz sampling audio systems, can produce a maximum sound frequency of 20khz in the analog audio range (I'm not sure how the maths goes, but that's apparently true). My question is, ...
1
vote
1answer
4k views

What is Tidal's 'Master' Quality sample rate and bit depth?

I've been using Hi-Fi as my streaming quality, which I believe is 1440kbps and 16bit depth. Does anyone know where I can find information pertaining to this screenshot?
1
vote
2answers
2k views

What sample rates can an MP3 file have?

The title says it all. What sample rates are possible for an MP3 file? It is my understanding that there are only a few bits for specifying the sample rate. I know that 44.1 kHz and 48 kHz are ...
1
vote
1answer
3k views

iPhone 5 Bit Depth & Sample Rate?

So, are we expecting the newly released iPhone 5 to have an increase in Bit Depth & Sample Rate capabilities for audio recording software / hardware? I scoured the tech specs on Apple's website ...
1
vote
3answers
11k views

What is the maximum sample rate/bit depth of the iPhone for recording?

Hello. I've been wondering for a while now about the recording capabilities of my iPhone. With the addition of the Apogee Mic and others it could be a good little recorder maybe? But I wonder, does ...
1
vote
1answer
40 views

How to Reduce Latency with ASIO driver?

Thanks for reading. Last year, got an electric drum set. However, I had no idea what I was doing, was faced with a problem, and eventually gave up and went back to my acoustic kit. My problem last ...
1
vote
1answer
204 views

How to handle conversion of 32728 Hz for playback on common software/devices? [closed]

I've been working on converting the soundtrack from a video game from its original format to something that you can easily play back on regular consumer devices. The system is Nintendo 3DS, utilizing ...
1
vote
4answers
394 views

sample rate confusion

hi, either i have a workload-related blackout or i'm missing some basics..... i just completed editing a project consisting of audio material which was originally 44,100Hz. the audio is intended to ...
0
votes
2answers
40 views

44100 Hz encoded in 24bit vs 16bit

I'm learning the basics of audio recording and mastering and I was thinking to some of my purchased audio collection. I have some assumptions that I feel may be incorrect or incomplete and would like ...
0
votes
1answer
27 views

Bit depth calculation doesn't seem to add up

I was looking to verify my understanding of audio file representations, so I decided to take an audio file at random and try to deduce its bit depth. According to MediaInfo, the file in question has a ...
0
votes
1answer
506 views

Converting from float 32 PCM to signed 16 PCM. Does it matter if I resample before or after the bit depth conversion?

I have a sound source fed into a GStreamer pipeline for conversion into a more suitable format. The sources are varied but at the end of the pipeline I must have Signed 16-bit PCM (Mono) at 48Khz. ...
0
votes
3answers
6k views

understanding sample rate conversions in Logic

Hi, when working on sound design for video in Logic 9, i use a project template with a sampling rate set at 48000khz. the source material i use vary in sample rate, hence i need to convert it all to ...
0
votes
1answer
412 views

Is 96kHz sampling rate becoming standard for high quality audio?

It seems like recording in a higher sampling rate allows for capturing more headroom and it's overall more spacey audio. At least to my ears. I've switched to 96k and I've becoming more conscious ...
0
votes
1answer
2k views

Reasamplomatic5000 Change Pitch Without Changing Tempo

I want to assign a voice sample to Reasamplomatic5000 and play it with a MIDI keyboard. However, the higher the pitch, the faster the sample is played, and the lower the pitch the slower the sample ...
0
votes
1answer
25 views

What should be the bit-rate & sample-rate settings, if I were to convert a WebM audio file to MP3?

I want to convert a WebM audio file to an mp3 file using FFmpeg. I was wondering what should be the ideal bit-rate & sample rate settings for the following input. Input #0, matroska,webm, from 'v....
0
votes
1answer
20 views

Why does increasing the sample rate with SoundForge make the pitch go way up?

I have a problem. I have to increase the sample rate to 44.100. But when I do pitch goes way up and the track plays faster! HELP Using SoundForge