garageband sequencer

A few days ago, you need to play a midi music Loop in a Delphi applet. Why not MP3 or WAV or other? Because the MIDI format is small in size. (In short I have my inevitable reason, more spray nonsense meaning)The playback feature is selected using the mciSendString function in MMSystem, and notice that the "OPEN" operation requires the media type "type SEQUENCER" (that is, MIDI audio), and then use the "Play XX REPEAT"Operation want to be able to loo

Method One: Let the class implement the comparable interface, and overwrite the CompareTo () method, add the custom class to TreeSet1 ImportJava.util.Scanner;2 ImportJava.util.TreeSet;3 //TreeSet Applications4 classMain {5 Public Static voidMain (string[] args) {6Scanner s =NewScanner (system.in);7TreesetNewTreeset();8 while(S.hasnextline ()) {9 intn =Integer.parseint (S.nextline ());Ten for(inti = 0; I ) { OneString string =s.nextline (); ASet.add (NewStri

policy with a function objectIn Java, where there is a similar set of sequencer, the Sequencer object only represents the strategy of sorting, such instances of the class is functionally not different, mutual equivalence, suitable as a singleton, saving unnecessary object creation overhead.prioritize static member classesStatic member classes are the simplest kind of nested classes. If the member class doe

. MidiSystem; Import javax. sound. midi. MidiUnavailableException; Import javax. sound. midi. Sequence; Import javax. sound. midi. Sequencer; Public class Test5 implements Runnable { Private Sequencer midi; Private String [] names = {"1.mid"," 2.mid", "3.mid"," 4.mid", "5.mid "}; Private int I; Private Map Public Test5 (){ InitMap (); New Thread (this). start (); } Private void initMap (){ Try { Map = new H

layer on the ground floor: Responsible for hardware manipulation access, which is the main part of the sound card driver to be implemented by manufacturers-Middle tier core layer: A variety of functional audio device components, to provide users with a number of predefined components (such as PCM, AC97, sequencer and controller, etc.), in addition to the user can also define their own device components-Sound Card Object Description layer: It is an ab

functionality for embedded devices. This series of posts only discusses Alsa-driver and ALSA-SOC in embedded systems.Two. ALSA Device file structureWe started our Alsa journey from Alsa's device file structure in Linux. Look at the ALSA-driven device file structure in My Computer:$ cd/dev/snd$ ls-lCRW-RW----+ 1 root audio, 8 2011-02-23 21:38 controlC0CRW-RW----+ 1 root audio, 4 2011-02-23 21:38 midic0d0CRW-RW----+ 1 root audio, 7 2011-02-23 21:39 pcmc0d0cCRW-RW----+ 1 root audio, 6 2011-02-23 2

I used to see the word "callback method (or callback function)", but I didn't know what it meant, and I didn't understand how to use it. Now from the network to collect some good information, and then tidy up, as their own notes, also as a learning process of a small footprint. (Most of this note comes from other people's summaries, questions, answers, etc, hereby stated)Below from 1. What is a callback function? 2. What is the function of callback functions? 3. What is the specific implementati

Blog home: http://blog.csdn.net/minna_dImagine a scenario where A has n fields and a comparison function specifically for a. Each comparison function is reused in n multiple lines of business.So, the question comes, and suddenly one day a adds a field in, and in the original scenario, the field should have a higher priority than all the other fields. There is no effect in other scenarios.How to solve this problem?1. Rewrite all of the original comparator classes, overriding their compare methods

sequencer sorts the numbers by character, and the sequencer compares the 1 2 1 10 placed in 2 front. This is also the usual style of sort if we want to change this situation, we need to use - N option, to tell Sort , " To sort by numeric values " ! [email protected] programming]# cat Number.txt110191125[Email protected] programming]# sort Number.txt110111925[Email protected] programming

the whole song. 17, in the voice of more music, if musical instruments such as the distortion of the guitar, pad must give the song out of the Spectrum space, the song came out, and the band similar to the sound of musical instruments to be lowered -3db, so that the whole tune and the sense of clarity and level. Using a particularly fast attack and release value in the threshold and compressor, the release value may cause gain suction if it is too small. 18, if you shrink midi, do not always

without disrupting the isolation and uniformity of the transaction and the consistency of the database. Optimistic concurrency control (optimistic lock) and pessimistic concurrency control (pessimistic lock) are the main techniques used in concurrency control. Pessimistic lock: Assumes concurrency conflicts and masks all operations that may violate data integrity Optimistic Lock: Assume that there will be no concurrency conflicts and only check for violation of data integrity when

Tags: mysql indexing principle and slow query optimizationFirst, Introduction1, why should have index?General application system, reading and writing ratio of about 10:1, and the insertion operation and the general update operation rarely appear performance problems, in the production environment, we encounter the most, is also the most prone to problems, or some complex query operations, so the optimization of query statements is obviously the most serious. Speaking of accelerating queries, you

impact of the index on performance becomes increasingly important.Index optimization should be the most effective means of optimizing query performance. Indexes can easily improve query performance by several orders of magnitude.The index is equivalent to the dictionary's Sequencer list, if you want to check a word, if you do not use a sequencer, you need to check from page hundreds of.

name, and provide the class object to treeset use.3, the implementation code is as follows:Exercise: Sort by string lengthidea: string This province is comparable, but its comparison method is not required, then you can only use the comparator.The implementation code is as follows:Summary: Any object can be sorted according to the actual requirements, custom sequencer and the Sequencer object to the collec

encapsulation of alsa-driver, and he provides some column-enhanced functionality for embedded devices.Next we look at the device files and the SYS system interface:We can see the following device files:ControlC0 Control for sound card 1, such as channel selection, mixing, microphone control, etc.ControlC1 Control for sound card 2, such as channel selection, mixing, microphone control, etc.Midic0d0 for playing MIDI audio (my driver does not have)PCMC0D0C-PCM Device for sound card 1 recording (tv

them to 1024, 8192. On our platform with DMIX will appear underrun!!! Information.2 ALSA Kernel2.1 DirectoryAlsa-driver includes many drivers in development and support for some 2.2,2.4 Linux kernel versions. When these drivers are stabilized, they are moved into the Alsa-kernel and eventually in the Linux kernelIn the sound directory.Sound/core/oss/seq/oss/instr/drivers/mpu401/opl3/i2c/l3/synth/emux/pci/(Cards)/isa/(Cards)/arm/ppc/sparc/usb/pcmcia/(cards)/ossThe core directory is the heart of

provide more customization functions, and can customize the sequencer. Code: (1) The sorted list is: Copy Code code as follows: (2) The jquery code is: Copy Code code as follows: var items = $ ('. To_order li '). get (); Get all pending Li Items.Sort (function (a,b)//Call JavaScript built-in function sort, parameter is a closure function, that is, the sequencer {

command-line-based toolsets, such as mixer (mixer), audio file player (Aplay), and tools to control specific properties of specific sound cards.ALSA ArchitectureThe ALSA API can be decomposed into several main interfaces:1 Control Interface: Provides common functionality for managing the sound card registration and requesting available devices2 PCM Interface: manages digital audio playback (playback) and recording (capture) interfaces. The following summary of this article focuses on this inter

other graphical test cases as well.) ） Create a workflow that uses the sequence activity 1. Download the source code in this chapter, the final version of this example is available in the "Sequencer Completed" directory, which you can use Visual Studio 2008 to open and view its running results directly. The "Sequencer" directory is the practice version, and we'll start with this example, starting with Vi

An introductionWhy should I have an index?General application system, reading and writing ratio of about 10:1, and the insertion operation and the general update operation rarely appear performance problems, in the production environment, we encounter the most, is also the most prone to problems, or some complex query operations, so the optimization of query statements is obviously the most serious. Speaking of accelerating queries, you have to mention the index.What is an index?The index, also