1.1What is a list?In Python, the list is represented by square brackets ([]), and the elements are separated by commas.The list is an ordered collection, so to access any element of the list, simply tell Python the location or index of the element. Python provides a special syntax for accessing the last list element. By specifying the index as 1, you can have Python return the last list element:Bicycles = ['trek''Cannondale'redline ' ' Specialized ' ]print (bicycles)print(bicycles[0])print( BICY
one MIDI device to another MIDI device is a MIDI message. MIDI data is not a digital audio waveform, but a music code or electronic score. MIDI is a unified communication protocol between electronic musical instruments and between electronic musical instruments and computers. When playing, according to the MIDI file recorded music information to the wave table issued instructions, from the "table" to find the corresponding sound information, after the synthesis, processing and playback. Because
ideas: Hardware hifi level player (MOBILE)---〉wifi (wireless fidelity)---〉kx DSP---> Entertainment roomKnowledge Reserve: Know the slightest kx + KNOW dot mobile phone + know a bit of WiFi + knows point practical actual combat + do not understand point ratio must not line! Easy to popularize : The use of KX-driven sound card, sound chip is very backward , handheld device sound chip with each passing day, DAC chip (such as ES9018),op amp Chip (such as OPA2604),x Cinema Sound field system (DTS he
(also applies to the sound card for soft decompression a3d ).Some games (unreal, half-life, etc.) have their own reflection engines. it is wise to know whether eax is better than these engines. In addition, eax can be applied to music CD, MP3 and non-eax games, so that you can feel the charm of eax all the time.VIII. sensauraDon't think that 3D sound effects only have innovations eax and aureal a3d. sensaura's history is much longer than they are. It was proposed by several audio equipment manu
Software. As the name suggests, it can drive sound card devices under Linux.
It can support most popular sound cards. Modular architecture. Support full duplex, digital audio and other sound card features.
The latest packages can be downloaded from the FTP site to which http://www.alsa-project.org belongs. If you are interested and competent enough, you can also join the development team. Show the World the wisdom.
The following is a detailed description of the ALSA installation configura
Integrated sound card and the load card, generally have a soft sound card and a hard sound card points. Here the soft and hard points, refers to whether the integrated sound card has the main processing chip. Integrated soft sound card, there is no main processing chip, only a decoding chip, through the operation of the CPU, to replace the sound card main processing chip role. and integrated hard sound card, with the main processing chip, a lot of sound processing work will no longer need to par
' only ' the ' the '
# changed if required
# Don ' t forget to uncomment of the Activate (ACT Y) when happy
(CONFIGURE axe2201/3229569797 (LD 0
# Compatible Device ID PNP80D6
# Logical device Decodes bit IO address lines
# Minimum IO Base Address 0x0240
# Maximum IO Base Address 0x0380
# IO Base Alignment bytes
# Number of IO addresses required:32
# (IO 0 (SIZE) (BASE 0x0240))
# IRQ 3, 5, 9, ten, one, or 15.
# High True, edge sensitive interrupt
# (INT 0 (IRQ 3 (MODE +e))
# (ACT Y)
))
# end Ta
root, running/usr/sbin/sndconfig;
2 from the sound card selection list to choose the right sound card, the general sound card can use SoundBlaster;
3 after the election, Sndconfig need you to set up your sound card IO address and IRQ interrupt number, according to your actual choice;
4 The setting is done by pressing the OK button, if you hear the sound of Linus speaking.
39. How to drive YAMAHA719 sound card?
Yamaha719 sound card driver under Linux is very troublesome:
1 recompile core, do not
stored. Today, mid files are mainly used for original instrument works, amateur performances of pop songs, audio games and electronic greeting cards. The effect of *.mid file replay is entirely dependent on the sound card's grade. The greatest use of *.mid format is in the field of computer composition. *.mid files can be written in the composition software, but also through the sound card of the midi mouth of the external sequencer playing music into the computer, made *.mid files.
WMA: The
sound card devices under Linux.
It can support most popular sound cards. Modular architecture. Support full duplex, digital audio and other sound card features.
The latest packages can be downloaded from the FTP site to which http://www.alsa-project.org belongs. If you are interested and competent enough, you can also join the development team. Show the World the wisdom.
The following is a detailed description of the ALSA installation configuration process and considerations, as wel
been started. 9 Multi Media support
Multimedia service is very important in mobile phone, also is an important aspect of characteristic handset. The handset manufacturer should be clear the handset to support the audio file format: MIDI,MP3,QCP,PMD,EVRC-B,SMAF,PHRASE,AAC,AAC+,ADPCM and so on.
MMF (SMAF format) is the MIDI platform to add human voice effects, MMF is a smaf format file, SMAF is the syntheticmusic mobileapplication format abbreviation, is the
chip used in the mobile phone has the AKM company's 897X series, St company's LSM series as well as Yamaha company and so on.Because of the need to read g-sensor data and calculate m-sensor and o-sensor data,So vendors will generally provide a background daemon to complete the work, electronic compass algorithm is generally the company's private property rights.4 Gyro SensorThe gyroscope sensor is called gyro-sensor and returns the angular accelerati
the roll:y axis and the horizontal plane, for historical reasons, ranges from -90° to 90°.When the x-axis moves toward the z-axis, the angle is positive.The electronic compass needs to be calibrated before it can get the correct data, usually with a 8-word calibration method.8-word calibration requires the user to do 8-word shaking in the air using a device that needs to be calibrated,In principle, as much as possible, the device normal direction points to all 8 quadrants of space.The electroni
Frequency input: synchornization Horizontal: 30-69 Vertical: 50-120 data is obtained from the display description. Then set the resolution and save it. After startx, everything is normal.
Here is a tip: if you do not set your machine name, x windows will wait for a long time for the first time, only a gray screen and X-type cursor will appear, just like a crash. Please be patient and try drinking water or smoke a cigarette. Of course, the direct method is to set your machine name, edit/etc/host
. Win. Spread. FilterColumnDefinition fcdef = new FarPoint. Win. Spread. FilterColumnDefinition (0 ); // Create a StyleRowFilter object (style filter) and add it to the preceding filter settings. FarPoint. Win. Spread. StyleRowFilter styleFilter = new FarPoint. Win. Spread. StyleRowFilter (fpSpread1.ActiveSheet, inStyle, outStyle ); StyleFilter. AddColumn (fcdef ); // Set the created row filter object for the form. FpSpread1.ActiveSheet. RowFilter = styleFilter; // Filter data areas by text. FpS
, the angle is positive. Roll: The angle between the y-axis and the horizontal plane, for historical reasons, ranging from -90° to 90°. When the x - axis moves toward the z - axis, the angle is positive. The electronic compass needs to be calibrated before it can get the correct data, usually with a 8 -word calibration method. 8- Word calibration requires the user to do 8-word shaking in the air using a device that needs to be calibrated ,In principle, as much as possible, the device normal dir
communication on the Internet and is suitable for real-time playing on the network. It is currently the best online music format.
Vqf with high compression ratioVqf, that is, twinvq, is an audio compression technology developed by the same company as Yamaha, and is developed by Nippon Telegraph and Telephone.The audio compression ratio of vqf is nearly twice higher than that of standard MPEG audio, and can reach around or even higher. Popular compres
sound quality andThe output of kernel streaming is no different.Q which operating systems can use kernel streaming?A kernel streaming only works on Windows 2000 and Windows XP. Some people say it should work.Run on Windows ME.How to SetWhen foobar2000 is enabled, you will find that it does not even have play or stop buttons. You can go to foIn obar2000 gt; preferences gt; display, select Show buttons and go to DSP manager.To the left, and then in the resampler under DSP managerE rate is set t
appliedGtkcheckbuttonAnd gtkradiobuttonIn the example, as long as the gtk_rc_parse () function is deleted after the gtk_init () operation and the format scheme is specified:....Gtk_init ( argc, argv );Gtk_rc_parse ("styles. RC ");....Repeat and adjust the itinerary. The following figure shows a specific line:
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screensaver File
. Sea Macintosh Startup File
. Sit compression stuffit expander
Install the Macromedia Flash plug-in on the. SWF Flash Animation File Browser
. Sys System File
. Tar UNIX compressed file WinZip
. Tif high quality image file drawing/View Software
. Tiff high quality image file drawing/View Software
. Tmp temporary files can be deleted
. TTF font file
. TXT text file notebook or all text processing systems
. Vbs Visual Basic programming file Microsoft viasual basic
Install vivo p
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