MP3 ENCODER FOR EAC 320KBPS
MP3 ENCODER FOR EAC SOFTWARE

Instead of using a lower sample rate to remove the unnecessary top octave of audio, I use a low-pass filter at 11,000Hz in my very last step before encoding. There is no important vocal information in the octave from 11,000Hz to 22,000Hz - but rather just unwanted noise. Furthermore, most pre-encoding recordings are (and should be) made at 44,100Hz.

MP3 ENCODER FOR EAC SOFTWARE

But we have found a few hardware and software MP3 players that don’t accept anything except 44,100Hz. Per the Nyquist Theorem a 22,050Hz sample rate can reproduce frequencies of up to 11,000Hz which is more than good enough for voice recordings, particularly those which are recorded from telephone lines (~3,500Hz max).

Some point out that this lower sample rate will reduce the amount of data given to the MP3 encoder and therefore require somewhat less compression. Why not go lower, perhaps 22,050Hz? After all, the uncompressed WAV or AIFF files will then be half the size. Downsampling from 88,200Hz to 44,100Hz isn’t perfect, but because it’s a simple 2:1 transformation, the artifacts are somewhat less objectionable than when the resampler has to interpolate. If you have to resample from 48,000Hz to 44,100Hz, for example - the audio tracks within many video formats are recorded at 48,000Hz - you will generate undesirable artifacts. If possible, record at the same sample rate you’ll use for your MP3. Many hardware and software MP3 players including those common web-page ones using Adobe/Macromedia Flash won’t play anything that isn’t a multiple of 11,025.

MP3 ENCODER FOR EAC 320KBPS

If you want a super-high quality recording (better than CD) and you plan to encode at 320kbps or more, then you *might* want to use 88,200Hz, but that’s not really in podcast territory, at least not today.Īvoid any sample rate that isn’t a multiple of 11,025Hz. I recommend using a 44,100Hz sample for all podcasts. For more information on MP3 technology and history see this entry in Wikipedia. IOW, there isn’t a fixed relationship between sample rate and bit rate. Sample rates are not the same as BitRates (see below), the bandwidth of the encoder’s output. The sample rate of an MP3 file specifies how the input to the encoder is analyzed. The following is a compilation of various topics I have posted over the past few years. If you do not allow these cookies, you will experience reduced relevant content.There are many myths and much confusion about the proper way to create audio files using an MP3 encoder, particularly for spoken-word podcasts. They do not store directly personal information, but are based on uniquely identifying your browser and internet device. They may be used by Analog Devices to build a profile of your interests and show you relevant content on our site. Targeting Cookies: These cookies may be set through our site by Analog Devices and our service providers. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance. All information these cookies collect is aggregated and therefore anonymous. They help us to know which pages are the most and least popular and see how visitors move around the site. Performance Cookies: These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. If you do not allow these cookies then some or all of these services may not function properly. They may be set by us or by third party providers whose services we have added to our pages. Functional Cookies: These cookies enable the website to provide enhanced functionality and personalization. These cookies do not store any personally identifiable information. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. Strictly Necessary Cookies: (Always Active) These cookies are necessary for the website to function and cannot be switched off in our systems. After we finish updating our website, you will be able to set your cookie preferences. Analog Devices is in the process of updating our website.

Mp3 encoder for eac