The bundled iZotope plug-in offers excellent mastering, corrective and file conversion tools.Sound Forge on the Windows platform includes a number of Sony's own audio processing plug-ins, which had always been something of a weakness. The Mac version includes a small number of Sony's own plug-ins for processes such as normalisation and channel conversion, but mainly takes advantage of Apple's stock plug-ins, which both look better and, to my ears at least, sound better than their PC counterparts. AUDistortion, AUDynamicsProcessor and AUMatrixReverb are good examples, all offering plenty of control in an easy-to-use format.
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The recording process in Sound Forge Pro Mac is impressively efficient, whether you are recording a simple mono source or a 32-track monster. You can configure the routing between your various hardware audio inputs and Sound Forge's channels via the main Preferences dialogue, and unless you swap between a number of different audio hardware configurations, this is a 'set and forget' task. Then, when selecting a new recording from the File menu, you simply have to choose the required audio format (number of channels, sample rate and bit depth).
WavePad is largely used as a wav or mp3 editor, but it also supports a number of other file formats, including vox, gsm, wma, real audio, au, aif, flac, ogg, and more. WavePad Audio Editor is available for free to non-commercial users, and it comes with most of the features of the full version, which includes additional effects for professional sound engineers.Editing tools in Wavepad include cut, copy, paste, delete, insert, silence, auto-trim, compression, pitch shifting and more, while audio effects include amplify, normalize, equalizer, envelope, reverb, echo, reverse and many more. Advanced tools include spectral analysis (FFT), speech synthesis (text-to-speech) and voice changer.Audio restoration features including noise reduction and click pop removal. Wavepad Audio Editor supports almost all audio and music file formats including MP3, WAV, VOX, GSM, WMA, AU, AIF, FLAC, real audio, OGG, AAC, M4A, MID, AMR, and more. Its sound effect library includes hundreds of sound effects and royalty free music clips. Supported sample rates range from 6 to 192kHz, stereo or mono.Pros:
My first attempt at reading and writing WAV files was in 1990 or so under Windows3.1.I started using Linux in early 1995 and contributed some code to thewavplayprogram.That contributed code would eventually mutate into this library.As one of my interests is Digital Signal Processing (DSP) I decided that as well asreading data from an audio file in the native format (typically 16 bit short integers)it would also be useful to be able to have the library do the conversion to floatingpoint numbers for DSP applications.It then dawned on me that whatever file format (anything from 8 bit unsigned chars,to 32 bit floating point numbers) the library should be able to convert the data towhatever format the library user wishes to use it in.For example, in a sound playback program, the library caller typically wants the sounddata in 16 bit short integers to dump into a sound card even though the data in thefile may be 32 bit floating point numbers (ie Microsoft's WAVE_FORMAT_IEEE_FLOATformat).Another example would be someone doing speech recognition research who has recordedsome speech as a 16 bit WAV file but wants to process it as double precision floatingpoint numbers.
In the above example, there is a 3 dB difference between the original and the processed versions, yet our perception may give us the idea that it is a higher number. The RMS of the processed sample is at -19.3 dB, below the usual level of -16 dB, but it sounds very loud. Suppose that after the loudness processing we cut off the sound recording's frequency portion above 16 kHz (API 560EQ):
Please note, RMS only represents electric power, different from the loudness you hear! When measuring and adjusting loudness using RMS, you often need to resort to your hearing experience to determine whether or not the frequency response and presence of two sounds are the same, then compare with the numerical measurement. Especially with low-frequency content, your monitor headphones usually cannot function precisely below 50 Hz, but that portion can make your RMS high! This is why Sound Forge introduces this equal-loudness weighting for you to select. To easily test my point, you only need a -20 dB, 30 Hz low-frequency signal to blend into an ambience. The RMS and LKFS will present very different numbers. You probably won't hear this low frequency at all and the waveform probably won't look much different before and after cutting off that frequency band. This will cause discrepancies between your meter reading and your hearing. But trust me, this problem is so common that at least 80% of the sound assets used in a game will face it. Therefore, a good sound card, good monitoring equipment, good ear training, and good monitoring practice are very important!
NEWS[2019-03] PEBL Version 2.1 PEBL 2.1 has been released, with versions available for OSX, Windows, and windows version you can run without installing (the source will also compile and run on Linux). This addresses a lot of minor issues found by users of Version 2.0, and includes:Support for html get and post via curlSupport for parsing json, and implementing all translation files as .json files (instead of .csv)Migrating the sound system to use SDL_Mixer. Along with supporting sounds with lower latency, and things like panning, this will also permit loading .mp3, .ogg, and other common sound formats. Improved handling of UTF-8 text.Download PEBL 2.1 installer for WindowsDownload PEBL 2.1 for WindowsDownload PEBL 2.1 for OSX (OSX 10.7 or newer)How to install get started (Updated!)Older news[2018-01] PEBL Version 2.0 (Final) After a lot of testing, PEBL 2.0 is finally released! Along with substantial changes porting to SDL2 (which incorporates hardware video support, better internationalization, and a lot of fixes under the hood), we also include many new translations to tests in the test battery (Thanks to many international contributors), several new tests for the test battery, and changes too numerous to cover in detail. [2017-04] PEBL Version 2.0 Beta 4 I've released an update as PEBL 2-beta 4 officially numbered 2.0.4. This should address some installation problems occurrring with PEBL not appearing in the start menu on Windows, plus some other fixes that have trickled in over the past few months. MacOS has not been updated.[2016-09] PEBL Version 2.0 Beta 3[Update]. New beta 3 is now available on all platforms. This should fix problem on OSX. The second beta release of PEBL 2.0 is here. Along with updates and fixes in 2.0beta1, this includes a new translation scheme for the test battery. Now, to translate a test, you simply need to set your 2-letter language code in the launcher, select the test in the battery, and tlick the 'translate test' button. This will let you translate each instruction and label needed for the test. If no major problems are reported, this release will become PEBL 2.0. PEBL 2.0 beta3 is available both stand-alone and as an installable package for windows.Here is a video describing installation and some basic features of PEBL 2.0:[2016-09] PEBL Version 2.0 Beta After two years, version 2.0 of PEBL is in Beta release. This release involves a transition to hardware-accelerated graphics, and many updates and changes. The beta release is available on OSX as a package and on windows as a standalone executable (it does not need to be installed--just run it from your desktop). The final version of 2.0 will have updated documentation and improvements to translations and individual tests that don't yet appear in the beta release. I'd recommend using 0.14 (which will turn into 1.0) unless you are having specific problems with that release (such as most OSX users)If you find any problems with 2.0 beta 1, please send feedback on the forum or email.[2014-06] PEBL Version 0.14 The latest release of PEBL, version 0.14, is now available. As part of Version 0.14, we offer many new features including custom object support that allows for better object-oriented UI. As part of this, I have completely revamped the launcher to make it more polished and easier to use. One important addition this adds is the ability to set and change running parameters of tests in the battery. As a consequence, every single test battery test has been modified, and we have added at least ten new tests, bringing the total to around 100. Complete release notes are available here. Highlights to the test battery include new O-span, Sym-span, and reading-span tasks contributed by David Hegarty, an improved Iowa task contributed by Peter Bull, new code to do PAR-type scoring on the Wisconsin (Berg) card-sorting test, a dual n-back task, a Luck-and-vogel style change detection task, several verbal and memory tasks (DRM; probe-digit; ebbinghaus, brown-peterson, recognition memory, remote association task, paired-associates learning), some nice new scales (Berlin numeracy, handedness, big-five personality), Esposito's Bivalent Shape Task (a nonverbal stroop analog), and really to many improvements to list here.Also, we have started a crowd-funding campaign to help support future development of PEBL. When you launch the PEBL launcher, you will be given the option to donate to the project. Donors will be given a special access password allowing them immediate access to the launcher, and our eternal gratitude.In the coming weeks, I'll be making several getting started videos available via the PEBL Blog, to help new users.[2012-12]PEBL Version 0.13 and Test Battery 0.7The latest release of PEBL, version 0.13, is now available. Along with a lot of little fixes and updates, there are two major new functionalities that will impact users. First, the underlying list structure used by PEBL is now a vector, allowing constant-time access of arbitrary elements. This transition has some pretty nicebenefits for accessing elements efficiently, with very little drawback for the typical uses of PEBL. Next, we now support playback of movies and audio-media files via the waave library, which itself uses the ffmpeg library.Smaller changes include improved functions for handling screen size, network communication, improvements to the launcher, a change in how AddObject works when the object already has een added to a window,In the battery, I've changed every test so that they save data in .csv format for easier analysis, and they should also save in a data\ subdirectory. I've added several new tests to the test battery, including Salthouse's Connections task, a few memory tasks (one patterned on Ebbinghaus, the so-called Brown-Peterson test, the Dual N-Back test, Sternberg's memory scanning task, and others. Also, there is improved support for multi-user systems. Now, PEBL will launch the first time and copy files to your Documents folder.[2012-01-02]PEBL Version 0.12 and Test Battery 0.7The latest public release of PEBL, version 0.12, brings with it a lot of newfeatures and capabilities. Highlights include support for a numberof hardware interface devices, a new launcher, over 250 totalfunctions, audio input, and a number of new tests in the PEBL TestBattery, and many bug fixes and improvements. Some of the biggest andmost visible changes include: A new cross-platform launcher that is written in PEBLitself. The old launcher will probably still work if you want it to, but it is no longer possible to update it.The test battery has grown to nearly 60 tests, with many newtranslations.Basic support for many hardware devices, including joysticks, parallel port input/output, and serial port input and output, which allows use of a lot of USB devices such as the DLP-IO8, Cedrus RB button boxes, Lu's RTBox, and others.More forgiving interaction with your computer, including fallback screen resolutions, no more overwriting data files, better audio support, and improved filesystem access.[2010-07-23]PEBL Version 0.11 and Test Battery 0.6I've released the newest version of PEBL, version 0.11, and a new versionof the PEBL test battery, called 0.6. Version 0.11 contains a lot of under-the-hood fixes to memory management.Previously, PEBL had a number of memory leaks which could end up crashingthe system if it ran for too long. Most (all?) are now gone, which shouldimprove performance. Also, a new widget called a 'canvas' is available,which lets you create more complex widgets, do pixel-drawing and othercool stuff. Using it sometimes can (reliably) cause crashes the programon windows that I have not yet tracked down, so think of it as fairlyexperimental right now.Also, I've made a lot of progress toward enabling internationalizedexperiments. I've also now have translations of the BCST and BecharaGambling task into polish, chinese, and korean, and translation of TOLinto Spanish (and Portuguese soon). Those of you who want translatedversions of these tasks can now do translations of text strings and run byspecifying a two-character country code in the launcher. This comes at aslight cost--korean and chinese fonts are now included, making thedownload about 50% larger than last time. Also, I've moved to a defaultfont which handles western characters much better, so accents on mosteuropean languages should be handled seamlessly.Also, along with a windows installer, I'm releasing a stand-alone versionfor windows (in case you don't want to install it), and a .deb suitablefor some Ubuntu linux systems. I once again have PEBL running on OSX, andwill work toward a distributable version of PEBL 0.11 on OSX in the nearfuture.[2010-02-09]PEBL Test Battery Version 0.5 I've uploaded a new revision of the PEBL test battery, which I'm calling version 0.5. It is a drop-in replacement for the Battery Version 0.4 that comes with the last release of PEBL, and includes: Updates to Card sort and gambling task to support mouse control, easy internationalization, and improved visual feel. Improvements to the Tower of London to make it a full-fledged test. Substantial improvements to the trail-making test Several new tests that did not make it into previous batteries, including matchtosample; The match-to-sample test itemorder: The "item-order" test that appears in some traditional aptitude test batteries mspan: A new memory span test with visual-grid input. Available both as a staircase and a build-up method (sort of like the game Simon) probmon: Probability monitoring--watch 1-3 gauges for a noisy signal satest: A visual situation awareness monitoring task. timetap: A simple tapping test This brings to total number of tests in the battery to 37. The new battery can be downloaded here. You still need PEBL version 0.10 to run the battery, which must be downloaded separately. 2ff7e9595c
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