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Info: Biography, Pictures, Discography of all CDs & DVDs |
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| In its general sense, delay refers to a lapse of time.Transporting
Delay, an abnormity of adherence to timetable (see public transport timetables, airline timetables, traffic order, schedule, sailing list etc.Introduction
The delay is one of the simplest effects out there, but it is very valuable when used properly.The delay is the also a building block for a number of other effects, such as reverb, chorus, and flanging.What happens when two people play instruments in unison?Well they are not always playing in precise synchronization, so there is some delay between the sounds they produce.Simply put, a delay takes an audio signal, and plays it back after the delay time.The delay time can range from several milliseconds to several seconds.Figure 1: Diagram of the basic delay unit, or an echo device.Just having a single echo effect is rather limiting, so most delays also have a feedback control (sometimes called regeneration) which takes the output of the delay, and sends it back to the input, as shown in Figure 2.Most delay devices restrict it to be less than one for stability).With the feedback, the sound is theoretically repeated forever (at least until you turn the unit off), but after some point, it will become so quiet that it will be below the ambient noise in the system and inaudible.Sound Set 1 presents a variety of delay settings to give you a feel for delay times.Figure 2: Diagram of the basic delay unit with feedback.Delays are very useful for filling out an instrument's sound.Playing through a delay unit with a short echo, say 50 to 100 milliseconds, creates a doubling effect, as though two instruments were being played in unison.K)
Sound Set 2: A simple guitar riff, followed by the same riff, but with an added delay of 40 ms.As you increase delay times beyond 100 milliseconds or so, the delay no longer a subtle effect.One interesting possibility is to match the delay time to the tempo of a song so that the delayed copies of the sound fall on the beat.Extending to very long delay times close to a second or more gives you a chance to play over yourself and develop harmonies even though you may only be playing one note at a time.Sound Set 3 is a simple example of how you can layer single notes in such a fashion.K)
Sound Set 3: You can use a long delay to layer notes.The delay time used here is 1.Some delay pedals include sampling capability, though the length of the sample may be limited to two seconds or less.For serious looping, you will need devices with longer recording times, such as Lexicon's JamMan and the Oberheim Echoplex.Delays are also very important when building a mix of instruments in a stereo environment.Just a simple delay on the order of 20 milliseconds can make a big difference, as demonstrated in Sound Set 4.This is followed by the same riff with a 20 ms.Other Delay Types
Slapback
A slapback delay is not a new algorithm of any sort.It is the same as the basic delay without feedback discussed in the opening of this article.In the delay units discussed above, the output is taken after the signal has been delayed for the total delay time.But you can also take outputs such that the signal has only been delayed a portion of the total delay time.Taking outputs from points within the delay line is referred to 'tapping' the delay line, much like a tap in a water pipe allows you to get water at points long the pipe.The amount of delay between the various taps can be different.If the last delay value is zero, and only the fourth tap is used, the system is equivalent to the basic delay.If you set all but one of the tap gains to zero, and place the remaining tap at the end of the delayline, you then have the basic delay discussed above.You're are unlikely to find this kind of control in products though, primarily because it becomes very easy to create an unstable system.Notice that if you look only at the output of a single tap, the sound repeats according to the total delay time.The input sound will appear at the tap output before the total delay time (assuming that the tap isn't located at the far right in the diagram).The third sound clip uses the first setup, but with an increased total delay time increased by 200 ms.Delay 5 in the diagram increased by 200 ms.Rather than feeding back on themselves however, the output of the delaylines feedback into the other delay line, as shown in Figure 4.The first sequence was generated with a symmetric setup (delays of same length, same feedback gain) panned hard left and right.Implementation
Analog
Perhaps the most common audio recording device is magnetic tape, and this works perfectly well for creating delays.The delay is the amount of time it takes the recorded signal to travel from the recording head to the playback head.Delays of this type can be adjusted by changing either the tape speed, or the position of the recording and playback heads.To add feedback to a tape based delay, you can simply send some of the output signal from the playback head to the recording head.There are some interesting features in tape based delays that would be difficult to achieve with digital based delays.The desired delay time can be reached by simply cascading enough of these devices together.Using circuitry like this can provide more precise control over the delay time.Digital Delay Devices
As memory prices have been dropping over the last decade or so, digitally based delays are now cost effective.The actual operation of digital delays is relatively simple.The next sampling period, you read and write to the next location in memory, and when you reach the end of the memory, you loop around to the first memory location.In signal processing, this is called a circular buffer, and it is quite efficient.When programming delays, you typically manipulate a read pointer and a write pointer keep track of where you need to read from and write to memory.SiteCatalyst code version: H.You may give each page an identifying name, server, and channel on
the next lines.To postpone until a later time; defer.To cause to be later or slower than expected or desired: Heavy traffic delayed us.The act of delaying; postponement: responded without delay.The condition of being delayed; detainment.The period of time during which one is delayed."Please stay the bloodshed!"The king, who expected to pass through the city and to proceed to Vaux without delay, became quite red in the face from vexation.The Man in the Iron Mask by Dumas, Alexandre View in contextThe loiterer often blames delay on his more active friend.Fables by Aesop View in context"But," said the genius, "if I grant you the delay you ask, I am afraid that you will not come back.Maryland Route 54DelawareanDelawareansDelawaresDelawaresDelawaresDelawaresDelawarianDeLawrence Grant delayDelay (audio effect)Delay (disambiguation)Delay (disambiguation)Delay (electric guitar)Delay (programming)Delay 1968Delay Account of ....Here's the Tom DeLay mug shot snapped this afternoon when the deposed House majority leader appeared at a Harris County, Texas sheriff's office to be booked on conspiracy and money laundering charges.The congressman is scheduled for his initial court appearance tomorrow in Travis County District Court.Join TSG's mailing list.No links have been added to this section.Please check back soon for details.Scarborough from heaping praise on the former Democratic operative.Joe when it comes to cheap applause lines no one is better at them then you.Iraq, liberal attacks on the talk show host have been constant and unabated.It's time to put real pressure on Rush Limbaugh.Rush Limbaugh does on a daily basis.Not surprisingly, liberals are trying to use these two simple words to make a case against Limbaugh, since he has been public enemy number one amongst committed liberals for over a decade.The monks have been disrobed and shackled, the sources told BBC radio's Burmese service.There are reports that the monks are refusing to eat.Petraeus began his congressional testimony.Since last week's release of the 11119 version of the AJAX Control Toolkit, some people have reported problems using the .Toolkit with the Visual Studio 2008 web designer.Our team has just updated the 3.AJAX Control Toolkit release!AJAX Control Toolkit to coincide with today's release of .The content of the 11119 release is largely the same as our previous 10920 release, with most changes being minor tweaks to the .All of the new code analysis warnings resulting from improvements to the VS 2008 code analysis feature were addressed.The following changes were common to both the .AutoComplete to better support the use of purely numeric values.As always, it's easy to sample any of the controls (no install required).All that remains is for the calling application to do a bit of math on the original image's dimensions to determine how to scale it, pass that information along to CreateResizedImage to get back a properly sized image, and then discard the large original image.But sometimes it's worth a little extra effort to optimize some aspect of the user experience.CreateResizedImage to help you out!You can click here (or on the image above) to try SilverlightKidsDoodler in your own browser.To build the project, you'll want to use Visual Studio 2008 Beta 2 and the latest Silverlight Tools.The user interface elements (the color palette and action buttons at the left of the frame) are flush with the edges of the screen (when zoomed) to make them easy for young hands to target.As my daughter grows older and becomes more proficient, I'm thinking of moving her to something like Edubuntu which comes with a variety of educational applications already installed.SilverlightKidsDoodler is an extremely simple drawing program that's intended to help young children learn basic mousing skills while having fun doing something they already enjoy.The responses I've gotten suggest HtmlTextBlock is somewhat popular, so I've spent a bit of time improving upon the original implementation.XHTML would limit the usefulness of HtmlTextBlock.So now when its Text property is set, HtmlTextBlock first treats the input as valid XHTML and tries to parse it with XmlReader.Internet Explorer (though it works fine in Firefox, too)) by walking the node's .Name tree and manually building up the corresponding XHTML as the nodes of the tree are visited.Unfortunately, there's a catch...Depending on the content of the text, adding it to the DOM could insert untrusted HTML into the host browser's page.The problem was caused by the difference in when the Control.AJAX Control Toolkit release!For example, if a Calendar control is placed inside an UpdatePanel and made visible on an UpdatePanel postback, the embedded styles are now loaded properly.Calendar: Property to specify the position of Calendar, a default date feature that allows the calendar to start out with a selected date, and a consistent show, hide and focus story that makes the Calendar user experience more intuitive.ModalPopup: Ability to disable repositioning of the ModalPopup in response to window resize and scroll.Visual Studio 2005 as well as for .We slipped our release date a little in the hopes that we'd be able to include the new framework with this release, but eventually decided not to delay all the great new Toolkit code any longer.If you have any feedback, please share it with us on the support forum!HtmlTextBlock makes rich text display easy!Lately I've seen a few people wanting to display rich text in a Silverlight application, but having no way to do so easily.Most recently, I saw Tim Heuer bump into this when displaying RSS content in a neat demo of his.You can click here (or on the image above) to experiment with HtmlTextBlock in your own browser in an interactive demo page.So HtmlTextBlock doesn't actually derive from TextBlock, but it behaves as though it did.Having HtmlTextBlock use TextBlock internally and represent the HTML markup with Run and LineBreak elements is nice because it means that just about everything people already know about TextBlock automatically applies to HtmlTextBlock And I get correct word wrapping behavior for free.Run might not support mouse events, but in this case it would be convenient if it did.I'd guess it relates to keeping the download size of Silverlight to a minimum.Looking at the call to SetText in the debugger, textAreaSampleText.There are already plenty of fine Sudoku programs out there, so I didn't set out to write "the world's best Sudoku program".Rather, this was an opportunity to explore some aspects of Silverlight that I haven't shown off yet such as audio, keyboard input, control embedding, and some more animation.Naturally, there are a number of different techniques that can be used to solve a Sudoku puzzle.Most of the techniques rely on keeping track of what the valid candidates for each cell are.You can click here (or on the image above) to play a game of Sudoku in your browser.The sample boards from Wikipedia and Sudopedia are included to make it easy to get started and are believed to be free of copyright restrictions.Feel free to substitute your own favorite sounds!Sudoku when I started this project and it turned out to be a more involved game than I'd thought!Silverlight Sudoku Helper is fun and educational for others as well!Refresh, I've updated the Silverlight samples I own to run on the new bits.Specifically, I've uploaded the migrated source code and recompiled binaries for the team's Silverlight Airlines Demo, my Simple XPS Viewer Demo, and my Silverlight Surface Demo.Refresh's breaking changes from the 1.The migration of the these samples was pretty simple and required very little code change.Select the same directory the .AJAX Control Toolkit updated for .My team has one more reason to add to the list:
We've just updated the 10618 Toolkit release with Beta 2 versions of the AJAX Control Toolkit that work seamlessly with VS 2008 and .Beta 2 Toolkit, and find out for yourself!And if you have any feedback, please share it with us on the support forum.Last week someone asked about getting access the source code to make some customizations and I figured I'd post the tool and its source here for anyone to use.It
seems like something (or someone!WindowPlacementTool saves the RESTORED locations of windows.This makes it easy to target windows that change their window title depending on the current document.Feel free to reformat it in your favorite editor.I've made only the necessary modifications to get the original code compiling successfully under Visual Studio 2005 SP1.While I've always tried to take security and correctness seriously, the original code was written well before security was as big an issue as it is today.Recent modifications to Microsoft's CRT have deprecated some functions in favor of safer alternatives.This is the source of 3 of the 4 compiler warnings; read more about security enhancements in the CRT for additional details.TextAnalysisTool was first released to coworkers in July of 2000 as a native C++ application written from scratch.NET Framework became popular, I decided it would be a good learning exercise to rewrite TextAnalysisTool to run on .It's always neat to get an email from someone in a group I had no idea was using TextAnalysisTool.With the latest request, I realized my blog would be a great way to help internal groups and customers by making TextAnalysisTool.NET by clicking here (or on the image above).The first section of that file is a tutorial and the second section gives a more detailed overview of TextAnalysisTool.NET was written with speed and ease of use in mind throughout.NET to the public before I decide where to go with the next release.SampleWebSite that comes with the Toolkit!AJAX Control Toolkit update!Tabs: Resolved NamingContainer issues so that FindControl works as expected in Tabs.Localization: Turkish, Dutch, and Traditional and Simplified Chinese language support added.Each JS file typically contains a single Behavior, so if a web page uses lots of Behaviors, it's going to download lots of Behavior JS files.While there are certain benefits to this, we chose not to do so for two main reasons: 1) the ASP.HTTP's GZIP and Deflate) tend to compress data better in one chunk than in multiple chunks (because the dictionary doesn't keep getting reset).Of course, if you're not using the default namespaces "asp" and "ajaxToolkit", you'll need to substitute your own namespaces.The first stage takes place during the normal ASP.While this hasn't been a problem so far, it will be easy to change the format in the future (with no impact to users) and we're already considering ways of doing so.You hear me(x3)
Up, up and away
in my beautiful my beautiful
Up,
up and away in my beautiful..."Are you sure you want to block this user?"Are you sure you want to delete this comment?"This could be an attempt to steal your username and password.This is not a MySpace login page, please do not enter your MySpace login information (email address or password). |
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