8. Controle por Vinil¶

O controle por vinil permite ao usuário manipular a reprodução da faixa no Mixxx usando um toca-discos real como controlador. Em efeito, isso simula o som e o sentimento de ter a sua coleção de música digital no vinil. Muitos DJs preferem o sentimento tátil do vinil, e o controle por vinil permite que este sentimento seja preservado enquanto os benefícios do áudio digital permanecem.

8.1. Como funciona?¶

Vinyl control uses special timecode records or CD’s which are placed on real turntables or CDJ. The audio output of the turntables is plugged into a computer on which Mixxx is running. When a record is played on one of the attached turntables, Mixxx reads the timecode from the record and uses the information to manipulate whatever track is loaded.

8.2. O que eu preciso fazer para usar?¶

It is possible to use Mixxx’s vinyl control with several hardware setups, but the basic ones are:

Configuração 1: DJ de Vinil

Two timecode vinyls, two turntables with phono pre-amplifiers (or line-level output), and two stereo sound inputs.

Your sound card inputs must match the turntable outputs. Older turntables only have phono-level outputs, and you should find a sound card that has a phono pre-amplifier built in. Some turntables have line-level output, and these can be used with any sound card.

Você pode tentar pular os pré-amplificadores fono se você usar o pré-amplificador de software no Mixxx no painel de preferências Controle por Vinil. Isso pode não funcionar para todo mundo. Sinais de linha são preferíveis e recomendados.

For turntables a typical setup is depicted in the figure below. First, connect the RCA cables from the turntables to the inputs on your sound card. Second, connect the outputs of your sound card to the inputs on your mixer.

Usando o Mixxx junto com toca-discos e um mixer externo¶

Nota

Muitos toca-discos modernos tem uma chave Linha/Fono. Se o seu tem, esteje certo que este combine com a entrada ou troque a configuração na sua placa de som.

Configuração 2: CDJ

Two timecode CDs, two CD decks, and two stereo sound inputs.

Setting up CDJs for use with timecode CDs is similar to setting up turntables. The figure below outlines a typical configuration. First, connect the RCA cables of the CDJs to an inputs of your sound card. Second, connect the inputs of your mixer to the outputs of your sound card. Make sure the input mode of your sound card is set to Line.

Usando o Mixxx junto com CDJs e um mixer externo¶

Entradas de Som

It is recommended to use a proper DJ sound card that has multiple stereo line inputs on it.
Alternatively you can use two sound cards, each with a single stereo line in, but this is strongly discouraged.

Mixxx supports vinyl control input through a single soundcard with at least 4-channels of input (two stereo line-in jacks), or through two separate soundcards which each have 2-channels of input (a single stereo line-in jack). Vinyl control requires the use of stereo line-in jacks - Mono or microphone inputs will not work.

It is strongly recommended to use a soundcard that comes with native low latency drivers such as ASIO (Windows) or CoreAudio (Mac). Linux users depend on the quality of the corresponding open source driver.

Nota

Para melhor performance de stratching com o controle por vinil, nós recomendamos usar um sistema capaz de of latências de 10ms. Com latências maiores o som de stratching vai começar a ficar distorcido.

8.2.1. Mídia de Timecode suportada¶

Alterado na versão 1.11: Added MixVibes DVS V2 Vinyl support

Você pode usar qualquer mídia de timecode suportada pelo Mixxx:

Tipo	Tempo de Resposta
Serato CV02 Vinyl	Muito alto
Serato CV02 CD	Muito alto
Vinil Traktor Scratch MK1	Muito alto
Vinil Traktor Scratch MK2	Não suportado
Vinil MixVibes DVS V2	Muito alto

Atualmente, vinils do Serato são recomendados se vocÊ estiver querendo comprar vinil. Se você quiseer usar CDs, você pode baixar uma cópia gratuita para uso pessoal do Serato.

8.3. Configurando dispositivos de Entrada e Saída¶

Preferências do Mixxx - Configurando os dispositivos de Entrada e Saída para o Controle por Vinil¶

Mixxx can be controlled by up to 2 decks with either timecoded vinyl or timecoded CDs.

Abra Preferências‣ Hardware do Som
Selecione a aba Entradas
From the Vinyl Control 1 and Vinyl Control 2 drop-down menus, select the soundcard(s) which your decks are plugged into
In the channel selection drop-down menu, select the channel pairs corresponding to the plug on your soundcard that your deck(s) are plugged into, typically Channels 1-2 and Channels 3-4
Clique em Aplicar para salvar as mudanças.
Selecione a aba Saída
Specified Deck 1 and Deck 2 to route Mixxx’s output directly to the external mixer
Clique em Aplicar para salvar as mudanças.

8.4. Configurando o Controle por Vinil¶

Preferências do Mixxx - Configurando o controle por vinil¶

Você pode configurar o controle por vinil em Preferências ‣ Controle por Vinil.

8.4.1. Turntable Input Preamp¶

Many turntables provide unamplified “phono level” output which must be boosted to a “line level” signal. Normally, a mixer or soundcard provides this amplification, but if you’re plugging a turntable’s phono output directly into a soundcard that doesn’t support phono input, Mixxx can do the amplification. The Turntable Input Preamp slider allows you to adjust the level of preamplification applied to your decks” signal. However it is always preferable to use a proper phono preamplifier if you have one.

8.4.2. Configuração do Vinil¶

Vinyl Type: Several different types of timecoded media can be used to control Mixxx. Configure the drop-down menus to match what type of timecoded media you are using on your decks.
Deck Vinyl Tempo: Change this if you prefer to scratch with your turntable or CDJ set at 45 RPM, default is 33 RPM.
Lead-in Time: Allows you to set a dead-zone at the start of your vinyl or CD, where the time code will be ignored. This is useful in situations where the time code begins very close to the edge of a vinyl which can make back-cueing over the first beat in a track tricky to do without your turntable’s needle falling off the vinyl. Setting a lead-in time of 20 seconds or more helps alleviate this by giving you more room on the vinyl to cue with. It’s also useful when you’ve worn the grooves at the edge of a control record to the point that it no longer works reliably: you simply set the lead-in so that the start of the tracks begin in good groove area. You can keep doing this until you run out of groove area, thereby decreasing your record replacement frequency.
Mostrar Qualidade do Sinal em Skins: Se ativado, uma representação circular do sinal de entrada de timecode é mostrador em tempo real na Janela do Vinil na interface do Mixxx.

Dica

Embora não recomendados, você pode usar diferentes tipos de mídia de timecode por deck.

8.4.3. Modo de Controle¶

O Mixxx tem três modos de controle independente de qual modo de controle você usar

Absolute Mode: Provides Mixxx with both pitch and position information from the timecode, and allows you to seek by needle dropping on your vinyl or seeking on your CDJ.
Relative Mode: Takes the position to be relative to your deck’s starting point, and only controls the pitch in Mixxx. It is not possible to seek using your deck in relative mode, with one exception. If you drop the needle in the “Lead-in Time” area (see Vinyl Configuration), Mixxx will seek back to the beginning of the track. Once a track is playing in Relative Mode, Mixxx will not allow you to select Absolute mode. Otherwise, the track would suddenly jump to a new position. Make sure the record is stopped and then you’re free to select Absolute mode.
Constant Mode: This special mode is usually only activated when Mixxx needs to keep playing a track even if the vinyl control signal isn’t present. Constant mode is automatically enabled when the needle reaches the end of a vinyl control record, or if “Needle-skip Prevention” is enabled and a needle skip is detected.

8.4.4. Modos de Cueing¶

Mixxx has two optional cueing modes for vinyl control which only apply to Relative Mode. These modes are useful for quickly seeking to specific positions in a track without touching the laptop. Turntablists often need to find a break or a vocal sample, and cueing modes make these easy to find.

Cue: In this mode, when you drop the needle on the record after the Cue point, Mixxx will seek to that cue point.
Hot Cue: When the needle is dropped Mixxx will seek to the nearest hotcue point, working backwards. So if you have a hotcue at the one-minute mark, and another at the two-minute mark, you can drop the needle anywhere between one and two minutes and Mixxx will seek to the one-minute hotcue.

Dica

You can change the Control and Cueing Modes directly in the Mixxx user interface while mixing, go to Modo de Controle por Vinil e controles de Cueing.

8.4.5. Needle-skip Prevention¶

Allows Mixxx to detect and ignore small changes in needle position, such as when you’ve accidentally bumped your turntable. When Mixxx detects a needle skip, it will engage Constant mode and the vinyl indicator (normally a green rectangle) will become red. Needle-skip prevention can be advantageous in a live performance environment but the downside is that it can be accidentally enabled during scratching, causing your track to play forward regardless of the turntable’s pitch. Consequently, disabling needle-skip prevention is recommended for scratch performances.

8.4.6. Qualidade do Sinal¶

A successful vinyl control setup hinges on good signal quality. Many factors can affect signal quality, but the most important one is ensuring the volume level of your timecode signal is moderate. A signal that is too loud or too quiet will cause adverse performance, often characterized by a loss of position data causing absolute mode to behave like relative mode.

Mixxx represents your timecode signal quality as a circular representation of the vinyl control audio signal itself. The two graphs correspond to your Deck 1 and Deck 2 input devices.

Se o seu sinal de vinil está funcionando, você deve ver um círculo redondo, verde desenhado com duas linhas. A “rosquinha” do vinil deve ser o mais circular possível, e as linhas devem ser limpas sem uma quantidade mínima de ruído.

Dica

Você pode mostrar a qualidade do sinal na interface do usuário do Mixxx enquanto mixando, veja Configurando dispositivos de Entrada e Saída .

8.5. Ativando o Controle por Vinil¶

For each deck, select Options ‣ Vinyl Control ‣ Enable Vinyl Control or use the Application shortcuts.

8.5.1. Mostrador do Estado do Controle por Vinil¶

O estado do controle por vinil, e o mostrador da qualidade do sinal no deck¶

Um retângulo provê um retorno visual em relação ao estado do controle por vinil de um deck.

Desligado: Controle por vinil desativado no deck.
Verde: Controle por vinil está ativado no deck.
Amarelo: A agulha chegou no Fim do Disco
Red: A needle skip was detected.

8.6. Controle de Deck Único¶

If you only have one turntable, you can still use Mixxx to play your sets. In the Preferences ‣ Sound Hardware ‣ Input tab, use the same audio input for both Vinyl Control decks.

When mixing, you’ll have one track playing automatically while the other is controlled by the turntable. Start by enabling vinyl control on the first deck, and start mixing. When you’re ready to cue up the next record, just disable vinyl control on the first deck and enable it on the second deck. Playback will continue on the first deck without interruption. Cue up the second track and mix it in. When you’re ready to cue the first deck again, just toggle the second deck off and the first deck on again.

You can bind a key to the [VinylControl],Toggle control to automatically swap from one deck to the other.

In the Assistente de Controlador, select Vinyl ‣ Single Deck mode to assign the control to a key on your MIDI device.
To assign the control to a keyboard shortcut like Shift + T , you just need to add the following lines on top of your custom keyboard mapping file.
```
[VinylControl]
Toggle Shift+T
```

8.7. Modo Fim do Disco¶

Sometimes the track you are playing is longer than the timecode area on your record. If the needle reaches the end of the vinyl timecode, Mixxx will enter a special End-Of-Record Mode. When this happens, the vinyl indicator (usually a green rectangle) will blink yellow as a warning. At the same time, Mixxx will automatically enable Constant Mode and will ignore the turntable’s pitch. At this point the track will simply continue playing until the end. When you load a new track, End-Of-Record Mode will be automatically disabled and Constant Mode turned off.

When you’re in End-Of-Record Mode and you want to still use the turntable for pitch control, simply lift the needle and place it anywhere in the main timecode area. It’s OK, the track won’t stop playing. As soon as Mixxx detects that the needle has settled, it will automatically switch to Relative Mode.

8.8. Faixa de Controle¶

Some vinyl control records have a special portion of grooves near the center of the record for selecting and loading tracks in the user interface. You can see these grooves because there is a gap between the main timecode area and the inner circle. Some control records have not been tested with Mixxx, and their control areas are not supported. Serato CV02 Vinyl and Traktor Vinyl MK1 are known to work. Serato CV02 CDs are known not to work.

Apenas jogue a agulha na área de controle e deixe o disco tocar para frente ou para trás. A linha selecionada na biblioteca deve se mover para cima ou para baixo. Simplesmente erga a agulha e jogue em qualquer lugar da área principal de timecode para carregar a faixa.

8.9. Solução de Problemas¶

Configuração

Para completar a sua configuração você deve configurar o Mixxx corretamente. Esteje certo que você tem:

specified Deck 1 and Deck 2 in Preferences ‣ Sound Hardware to route Mixxx’s output directly to the external mixer
specified Vinyl Control 1 and Vinyl Control 2 under Preferences ‣ Sound Hardware ‣ Input
selected the correct control type under Preferences ‣ Vinyl Control ‣ Vinyl type in the preferences. See Usando Discos de Vinil de Timecode e CDs for the list of supported control records/CDs.
enabled vinyl control via the menu under Options -> Vinyl Control ‣ Enable Vinyl Control.

Qualidade de Sinal

O gráfico é mostrado em Preferências ‣ Controle por Vinil, veja Qualidade do Sinal.

Sinal	Significado	Solução de Problemas
	Os canais de entrada do controle por vinil não estão configurados corretamente. O controle por vinil não vai funcionar.	Abra Preferências/Hardware de Som e configure os dispositivos que você quer usar, veja Configurando dispositivos de Entrada e Saída
	Canais de entrada do controle por vinil configurados corretamente. Esperando por sinal de entrada de timecode.	Comece o seu toca-discos ou CDJ com o vinil de timecode selecionado ou CD.
	Nearly perfect green doughnut about about half the width of the graph. Rotating radar sweeps in the direction your record on the turntable is spinning .	Tudo está OK, nada para fazer. Vá tocar algumas batidas.
	Escolha incorreta da fonte do controle por vinil. A rosquinha parece boa mas tem uma cor vermelha sólida.	Selecione o tiop de vinil correto nas preferências. Por exemplo você selecionou o lado B para o Vinil do Serato mas o disco está no lado A.
	O sinal de entrada é ruim. Enquanto o sinal de vinil piora, você vai ver a cor da rosquinha mudar de verde para laranja para vermelho.	Verifique a fiação/aterramento do seus toca-discos/CDJ. O seu vinil/CD de timecode pode estar desgastado ou a agulha do seu toca-discos está suja.
	Direção errada. A rosquinha verde parece boa mas o radar roda na direção oposta ao do disco do seu toca-discos/CDJ.	Você provavelmente tem um problema de fiação. Tente inverter as entradas direita e esquerda do seu toca-discos. Você também pode ter que religar o cabeçote.
	O sinal de entrada não é sinal de timecode. O Mixxx recebe sinal de áudio normal quando ele espera um sinal de timecode.	Inicie o seu toca-discos ou CDJ com o timecode selecionado de vinil ou CD. Você pode querer verificar se os dispositivos de entrada estão configurados corretamente nas preferências.
	Left or right channel is missing. Mixxx recives only a mono signal but needs a stereo timecode signal to operate.	Verifique a fiação do seu toca-discos/CDJ e também o cabeçote e a agulha do seu toca-discos.
	Sinal de timecode muito alto. O Mixxx recebe um sinal que tem muita amplificação.	Lower the amplification, either on your external Mixer, soundcard or with the Turntable Input Preamp
	Sinal de timecode muito baixo. O Mixxx recebe um sinal que não tem amplificação suficiente.	Boost the amplification, either on your external Mixer, soundcard or with the Turntable Input Preamp