[Audio and Video Media Production] goldwave, a small audio processing tool, advanced tutorial

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[Author: cl1003 resending from winzheng.com]

Goldwave is a set of audio editing, playing, recording, and conversion tools. It is small in size and has no weak functions. There are quite a few open audio files, including WAV, Ogg, VOC, IFF, AIF, AFC, AU, SND, MP3, mat, DWD, SMP, Vox, SDS, Avi, moV and other audio file formats. You can also extract audio from Cd, VCD, DVD, or other video files. It contains a wide range of audio processing effects, from general effects such as Doppler, Echo, reverb, and noise reduction to advanced formula calculations (using formulas can theoretically generate any sound you want. Version 5.08 greatly improves processing speed and supports dynamic compression and storage of MP3 files.
Of course, before introducing the specific use process, let's take a look at some official features.

* Intuitive and customizable user interfaces make operations easier;

* Multiple files can be opened on the Multi-document interface at the same time, simplifying operations between files;

* When you edit a long music, Goldwave automatically uses the hard disk. When you edit a short music, Goldwave will edit it in a fast memory;

* Goldwave allows many types of sound effects, such as invert, Echo, shake, edge, and dynamic) and time limit, strong, and warp;

* Precise filters (such as noise reduction and mutation filters) help to repair sound files;

* The batch conversion command can convert a group of audio files into different formats and types. This function can be used to convert a stereo to a single channel, convert 8-to 16-bit sound, or combine any attributes supported by the file type. If you have installed the mpeg multimedia digital signal codecs, you can also compress the original audio files into MP3 formats, reduce the sound file size to about of the original size while maintaining excellent sound quality;

* The CD music Extraction Tool can copy the CD music into a sound file. To reduce the size, you can also extract the CD music and save it in MP3 format;

* In theory, expressions can be used to create arbitrary sounds and support simple tones to complex filters. Built-in expressions include dialing tone, waveform, and effect.

After reading the above introduction, I have an understanding of this tool.

Okay. Let's take a look at the specific operation. When talking about audio processing tools, the first thing we can think of is simply transcription, collection, and post-editing operations. One by one ~

First, let's take a look at the started interface, which consists of the main interface and controller. Because no audio file is selected, most of the menus and buttons are in the "unavailable" status.

Section 1: Transcription

What we call transcription is to open an existing audio file and save it again. Of course, we generally do not perform pure transcription, and the process must include some processing of the existing audio.

However, since it is a tutorial, we will put the processing part below to look at the pure "transcription "~

To open the file and save it, you must first open a file. We have previously seen the startup interface of goldwave, so we will not repeat it here.

Click "open" or "file" -- "open" to select a sound file.

After decompression and reproduction, an audio file is opened.

We can see that many menus and buttons that cannot be selected on the main interface have been activated.

We open a stereo file, so goldwave will display the waveforms of two channels respectively. The green part indicates the left audio channel, and the red part indicates the right audio channel.

The status bar at the bottom of the main interface is the status of the current audio file, such as time and frequency.

Click "play" in the Controller on the right to start playing.

You can see that there is a gray line in the main interface, which represents the current playing position

In the controller, you can see the specific waveform and the volume of the left-right audio ....

Some may ask why there are two playback buttons. What are the other buttons on the Controller Used?

Q: When we introduced the features of GoldWare, the first article was "* intuitive and customizable user interface, making operations easier ;"

Click the Properties button on the Controller panel or press the shortcut key F11 to enable the Controller property settings.

Here, we can adjust the playback attributes, recording attributes, volume, visual attributes, and sound card devices.

For example, the playback setting of Item 1 can define the button to play all the waveforms, the waveforms of the selected part, the waveforms of the unselected part, and the waveforms displayed in the window .....

At the same time, you can adjust the speed of fast forward and rewind.

As I said, we will not consider how to edit it, but simply introduce a "transcription" process. So we will skip all the edits and save them directly.

Select "file" -- "Save ..."

Select the file name and path to save

Note the following "attributes", including the compression ratio, sampling frequency, and sampling accuracy. The sampling frequency is actually the "Frequency" described above"

The higher the frequency, the larger the file. The lower the frequency, the smaller the file.

Section 2: Collection

This article briefly introduces transcription. It just helps you familiarize yourself with the GoldWave interface and learn how to open and save it, we also have a simple understanding of several important features of sound: compression ratio, sampling frequency, and sampling accuracy.

Now, let's start further introduction. The following is the "Collection" of sound"

The so-called collection seems to be professional. To put it bluntly, it is what we call the recording at ordinary times.

Click "new" in the upper left corner of the main interface to create an audio file.

In the pop-up dialog box, you can set parameters for creating audio files, such as audio channels, sampling frequency, and audio file length.

The sampling frequency is usually 44100. If you have special requirements, you can change them as needed.

The length depends on the length of the recording. If you are not sure about the length, select the length.

After all settings are complete, click OK.

After creating a blank audio file, you can start recording.

Press ctrl and click the red dot (recording key) on the Controller to start collection.

After recording a piece of sound, you can select a part for editing by left-clicking the start point and right-clicking the end point ~

Due to restrictions, we cannot have a completely quiet environment in a professional recording studio. At the same time, because the collection equipment is not professional (such as a microphone ), we will find that the effect of the collected audio files is not ideal. At this time, we need to use the above many "post-processing ~

The details will be introduced later. Here we will only introduce one of the most basic, "Noise reduction"

Choose "effect"> "filter"> "Noise reduction"

For most unprofessional friends, we don't have to study so many professional terms. What we need to do is simply click OK.

Of course, it is better if you can write settings based on the actual situation ~

Processing ING

Try the effect again, and the surrounding noise is all gone (the waveforms are also visible, and there is a lot of neat)

If you are professional enough, you can record a piece of noise as a sample for noise reduction processing in the future, which will make the effect better.

Method: Open your recording device and try to keep it quiet for 10 seconds.

There are many other settings in the effect, such as cracking sound.

Finally, save

You can choose to save it in a variety of different formats and different quality

Section 3: Post-editing

We mentioned earlier that using GoldWave to record and open a sound, whether it is to open an existing audio file or to record a new audio file, we usually need to edit and make the files like this, which are collectively referred to as "post-production "....

The post-production of audio files is actually a very complicated process, and many parts require some professional foundation. In fact, for most friends, what they can use is simple, the basic operations are simple and basic operations for post-production.
1. Select, cut, copy, paste, delete, and crop audio files .....

Audio file selection

As described earlier, the left mouse button specifies the start and right mouse button to specify the end.

, Selected a waveform

As shown in the figure, the selected waveform is displayed in blue background color, and the unselected waveform is displayed in black background color.

Cl1003 was last edited on

After selecting a waveform, we can perform various operations on the waveform.

First, cut, paste, and copy ~

Similar to the repliciws operation we are familiar with, replication retains the current waveform and copies it to another new location. The cut operation deletes the current file, which is equivalent to "moving a waveform to a new location"

Note that there are three different pasting methods.

We can see the buttons named "Paste", "Stick new", and "sound mixing" respectively"

Their differences are:

Paste: inserts a part of the copied or cut waveform from the selected insertion point, which is equal to adding a waveform.
New: copy or cut a part of the waveform, paste it into a new file, save it to a new file
Mixing: mixing a part of the copied or cut waveform with the same length waveform starting from the insertion point

Another operation that is close to the sound mixing method above is to "replace" the partially copied or cut waveforms to replace the waveforms of the same length starting from the insertion point.

Delete and crop

Delete waveforms: You can directly Delete the selected waveforms without retaining them in the clipboard.

Waveform clipping: similar to deleting a waveform, the difference is that deleting a waveform segment deletes the selected waveform, while cropping a waveform segment deletes the unselected waveform.

It is described in plain language. Deletion can be called "delete selected", while cropping is "delete unselected"

, The effect after the cropping, the remaining waveform is automatically zoomed in

After a brief introduction, let's take a rough look at some complex operations, which are frequently used for audio collection and processing.

1. compressors and extenders

For example, when recording our own songs, it is quite common that during the collection process, there are a few words that are too hard, and the sound is distorted after recording, but there are a few words that are too small, I cannot hear clearly.

At this time, we need to use the compressors and extenders. In layman's terms, it is to "compress" The tweeter and "extend the Bass" to balance the sound intensity.

Select "effect" -- "compressors, extenders"

Window as shown in Figure

Two concepts we need to know, threshold value and Increment

Threshold Value: that is, the critical point of compression and expansion that we need to use "compressors and extenders". The parts that exceed this value are compressed.

You can adjust the incremental size by yourself. The rule is that the larger the number, the more natural the sound changes, the blurrier the sound. On the contrary, the smaller the number, the harder the sound, but the clearer it is.

You can try to adjust it based on your own feelings and audio files.
2. Echo

Select "effect"-"Echo"

Let's talk about the functions of several options.

Latency: the larger the number, the longer the sound lasts and the stronger the effect.

Volume: The volume of continuous echo. It cannot be too large. Otherwise, the effect will be affected.

Stereo and reverb: as the name suggests, it is generally used to make the ECHO more real and have a sense of space.

3. balancer

It mainly improves the frequency structure of audio files to achieve better sound effects.

Select "effect"-"filter"-"balancer"

Enable the GoldWave 10-segment parameter balancer, as shown in figure

Then you can adjust it as needed.

Section 4: Post

Let's briefly introduce so much.

There are so many audio editing software that they claim to be professional and simple. In fact, many software are extremely similar in terms of functions and even interfaces, therefore, this small and green audio editing software, GoldWare, is a good choice.

It seems like an advertisement... so let's introduce some features other than GoldWare audio processing ~

1. CD capturing

Select tool> CD Reader"

Select CD and click Save to save it as an audio file.

Supports multiple file formats and various sound quality effects.

2. File Format Conversion Batch Processing

Select "file" -- "batch processing"

Add the files to be converted in batches in the window above. For example, here I add three mp3 files

In the following "convert file format to...", check

It can be saved as a variety of file formats and sound quality effects ~