aac to m4r

. 3 Click on the right mouse button in the Listening music file, select "Create AAC Version" 4 Click the right mouse button in the newly created music file and select "Display in Windows Explorer". 5 in a pop-up explorer, locate the file named ****.M4A format and rename the file extension to ****.m4r. 6 Add the ****.

". m4a" Change to. m4r "(This is the iphone's ringtone format), and then double-click the music to play in itunes, itunes will automatically add the music to the" ringtones "list, click" Ringtones "in the" database "will see the music in the list, Information such as the duration of the ringtone can be displayed in the list. The above is the normal process of using itunes to make ringtones, at which point the music clips can be uploaded to the iphon

-convert-Create AAC versionOnce clicked, one more song will be in the list.Watch the song time, only 40s.Select, and then view the localSelect the. m4a suffix of the song, copy to the other path, and modify the suffix to. m4rSo we get a ringtone file in. m4r format.Five, note here: We remember to first remove the 40s file, otherwise it will affect the following ringtone added.Six, make ringtones1. Select th

1. Open itunes on your computer and click "File"-"Add File to Database" in the itunes interface; 2. Find your favorite MP3 music file point hit launch. 3. After the success of the music we found in the music section of the itunes library, and then click on the right button to select the display profile; 4. In the pop-up dialog we click "Options", and then check "Start Time" and "Stop Time" start and end time can not be more than 40 seconds, because the iphone is the longest only support 40 se

Preparation Tools An iphone, a computer, an itunes software. IPhone5S Mobile Ringtones Setup Tutorial: 1. Install itunes first on your computer and then connect iphone5s to your computer, then set up "Device" in itunes and then click on the ringtones option to hook up in front of the sync Bell. 2. Then click the "Music" file in itunes-add the file to the database-select the correct path to find the music import. 3. Default itunes does not have ringtones this piece, you can click on the

Environment: OS X 10.9.5 | ITunes 11.4Step one: Import the MP3 you want to make a ringtone into the itunes library [or play the MP3 directly in itunes, the default itunes will automatically import]Then, it's a good idea to know when to intercept MP3 (start time and cutoff time) before you operate. Note that the length of time can not be too long, I generated a 45-second ringtone file, when syncing to the iphone, the prompt file time is too long to sync successfully. It is recommended not to exce

What if we want to set custom ringtones?1. Install iTunes on your computer, select a song in iTunes music, and click "show introduction"-"option ", the "start time" and "end time" cannot exceed 40 seconds.2. Right-click the music and select "create AAC Version". iTunes will generate a music in the ". m4a" format.3. Right-click the song and click "display in Windows Resource Manager"

Prepare toolsOne iphone, one computer, and itunes software.How to change the ringtone1. Install itunes on your computer, connect the iPhone 5S to your computer, set "device" in itunes, click the ringtone option, and check the synchronization ringtone.2. Click "music" in itunes-add the file to the database-select the correct path to import the music.3. By default, there is no ringtone in itunes. You can click "edit-preference settings-in the" regular "source opt

compatibility, we'd better choose high-quality MP3 format of the music file, small series selected is Eason Chan and Faye Wong's "Because of love", I guess you are very familiar with music enthusiasts, a very nice song. (as shown in the following figure) 3 Add the music you can find in the music section of the itunes library, and then click the right button to select the display profile; (as shown in the following image) 4 shows the introduction, a box pops up, select "Options" in the top

1. Open itunes First, select "File"-"Add Files to Database" in the upper left corner, where the music is opened, and the song is added to itunes (pictured). 2. Select the song to make the ringtone, right click "Show Introduction" (The following figure). 3. After opening "Show Introduction", select the "Options" tab, and then change the playback time of the song to 40 seconds to stop. Because the iphone's ringtone is only 40 seconds, after the change is good, the point is OK. 4. OK, afte

, there is no doubt about choosing itunes again (why not try something new: (Impatient, afraid of losing time, all sorts of reasons, excuses). Well, what a wordy!! Let's get started.First of all, the music files that will make the ringtones are ready. or download it online, or copy it from a CD.Next, import the file into itunes and use itunes to make a music file clip of the ringtone and format it for conversion. The detailed steps are as follows:1. Open itunes and add a ringtone menu. "..." --"

iphone making personality Ringtones First, we don't have to connect the Apple phone to the computer to install the itunes software directly on the computer, then open the software, then we put the bell on the computer desktop, now I open in itunes "Add files to the database" to add MP3 files to the database, in the pop-up window, Choose to add your favorite music files. The second step, then choose the music file we prepared to complete the increase, and then we see the music files t

conversion. After adding the file, select the output format and click "Start Converting" to convert the file. Format Junkie supports conversion between the following media formats: Audio: Mp3, wav, ogg, wma, flac, m4r, aac, m4a, mp2. Video: Avi, ogv, vob, mp4, 3gp, wmv, mkv, mpg, mov, flv, webm. Image: Jpg, png, ico, bmp, svg, tif, pcx, pdf, tga, pnm. Archive: Iso, cso. Subtitle encoding using Format

To achieve CD quality (16bit/44.1khz stereo) need 1411.2 kbit/s bandwidth, obviously Bluetooth A2DP cannot allow (Bluetooth 2.0/2.1 + EDR The largest carrier rate is about 2.1mbit/s, minus the protocol header, interference, power dissipation factor influence , the actual maximum transfer rate is approximately 1000bit/s), so the audio data needs to be compressed. We know that the same bit rate, different encoding format compression rate is different, thus decoding the quality of the restoration i

He-aac[Edit ] HE-AAC(English:High-Efficiency aac) "High performance AAC" is a lossy data compression technology that includes Advanced Audio encoding (AAC), Spectral Band Replication (SBR) and parametric Stereo (Ps,v2 version only).Another common name of HE-

The Adts full name is (Audio Data Transport Stream) and is a very common transmission format for AAC. ADTS AAC Adts_header AAC ES Adts_header AAC ES ... Adts_header AAC ES Adts content and Structure The informat

rate. The following values are defined:0 = 5.5 KHz1 = one kHz2 = KHz3 = About KHz Soundsize UB [1] Size of each audio sample. This parameter only pertains toUncompressed formats. Compressed formats always decodeto + bits internally.0 = 8-bit Samples1 = 16-bit Samples Soundtype UB [1] Mono or stereo sound0 = Mono Sound1 = Stereo Sound Aacpackettype IF Soundformat = = 10UI8 The following values are defined:0 =

Audio Stream (proportion of redundant data): Let's take a brief look at the structure of the ADTS header: 1) The ADTS header is at the beginning of each AAC frame and is typically 7 bytes long (or 9 bytes, not seen). 2) The length of each AAC frame is fixed to 1024 sample (can be 1024*n, have not seen n>1 case). 3) Most of the information in the ADTS header is useless, only the sample rate (4bit), the numbe

high compression ratio of-, which can keep the low-frequency part undistorted, however, at the cost of 12 kHz-16 khz's high-frequency components, the downsize of the file is reduced, and its. mp3's format file is generally only 10% of the. WAV format file. In addition, one of the major reasons why MP3 is popular is that it is not a technology protected by copyright, so anyone can use it. There are many kinds of sampling frequencies for MP3 compressed music. You can use 64 kbps or lower encodi

of-, which can keep the low-frequency part undistorted, however, at the cost of 12 kHz-16 khz's high-frequency components, the downsize of the file is reduced, and its. mp3's format file is generally only 10% of the. WAV format file. In addition, one of the major reasons why MP3 is popular is that it is not a technology protected by copyright, so anyone can use it. There are many kinds of sampling frequencies for MP3 compressed music. You can use 64 kbps or lower encoding to save space, and yo