Re: Vibration API strength (weaker/stronger)

Vibration API strength proposal with stair-stepping/smooth volume
reduce/increase:

    navigator.vibrate([
        {
            "time": 200, // Required property.
            "volume": [0, 80] // Minimum 0, maximum 100, default 100. [0,
80] smooth volume increase - starts volume strength at 0 and smoothly
increases to 80 till end.
        },
        {
            "time": 1000, // 1000 ms
            "delay": 50, // Will start vibrate after 50 ms. Default 0 ms
            "volume": [0, 100, 0] // Smooth volume reduce-increas-reduce -
starts at 0, smoothly increases to 100 in 50 ms and smooth reduce to 0 at
end.
        },
        {
            "time": 200,
            "volume": [50] // Stair-stepping volume - will start and end
volume strength 50.
        }
    ]);

or the same in simplified version without strings:

    navigator.vibrate([{200, [0, 80]}, {1000, 50, [0, 100, 0]}, {200,
[50]}]);

and single 1 s vibrate with 100 strength and without delay:

    navigator.vibrate({1000});


Binyamin


On Wed, Aug 21, 2013 at 11:35 PM, <7raivis@inbox.lv> wrote:

> Michael, your example does not bring volume strength control. I
> believe strength control would very improve UX of Vibration sensor.
>
> Binyamin
>
>
> On Wed, Aug 21, 2013 at 1:30 PM, Michael van Ouwerkerk <
> mvanouwerkerk@chromium.org> wrote:
>
>> Well, in this version of the API there's no vibration strength control,
>> for the reasons mentioned before. But as a fallback, to make a vibration
>> more or less noticeable you can play with duration and repeated vibrations.
>> For example: vibrate([50, 100, 50, 100, 1000]) would create a short
>> vibration, short pause, short vibration again, short pause again, and then
>> a longer vibration. Think of it like composing a rhythm in music. Some draw
>> more attention than others.
>>
>> Regards,
>>
>> Michael
>>
>>
>> On Tue, Aug 20, 2013 at 7:58 PM, <7raivis@inbox.lv> wrote:
>>
>>>  Michael, what do you mean with specific on/off patterns?
>>> http://dev.w3.org/2009/dap/vibration/ has nothing mentionned about it.
>>>
>>> Binyamin
>>>
>>>
>>> On Tue, Aug 20, 2013 at 4:19 PM, Michael van Ouwerkerk <
>>> mvanouwerkerk@chromium.org> wrote:
>>>
>>>> Note that while intensity is not controllable with this API, you can
>>>> increase duration and design specific on/off patterns. Not the same, but it
>>>> may help.
>>>>
>>>> Regards,
>>>>
>>>> Michael
>>>>
>>>>
>>>>
>>>> On Mon, Aug 19, 2013 at 6:15 PM, <7raivis@inbox.lv> wrote:
>>>>
>>>>> Thanks, Frederick, for your feedback!
>>>>> Vibration strength control would improve UX, it is like to control
>>>>> sound volume. It shocks on starting loud music or strong vibration. If it
>>>>> would have option to start from peaceful quiet music, weak vibration, it
>>>>> would make a obviously strongly better UX. Old GSM devices still has such a
>>>>> examples.
>>>>>
>>>>> Binyamin
>>>>>
>>>>>
>>>>> On Mon, Aug 19, 2013 at 5:44 PM, <Frederick.Hirsch@nokia.com> wrote:
>>>>>
>>>>>>  Please note that varying vibration strength may be beyond the goals
>>>>>> of this specification. The introduction states:
>>>>>>
>>>>>>  "The API is specifically designed to address use cases that require
>>>>>> simple tactile feedback only. Use cases requiring more fine-grained control
>>>>>> are out of scope for this specification. This API is not meant to be used
>>>>>> as a generic notification mechanism. "
>>>>>>
>>>>>>  It seems that varying strength is a complication that is not needed
>>>>>> to provide 'simple tactile feedback. What is the use case for adding
>>>>>> vibration strength and which implementations would support this?
>>>>>>
>>>>>>    regards, Frederick
>>>>>>
>>>>>>  Frederick Hirsch
>>>>>> Nokia
>>>>>>
>>>>>>
>>>>>>
>>>>>>  On Aug 19, 2013, at 4:42 AM, ext 7raivis@inbox.lv wrote:
>>>>>>
>>>>>>  בע"ה
>>>>>>
>>>>>>
>>>>>>  Why the Vibration API http://www.w3.org/TR/vibration/ does not have
>>>>>> such a thing as strength (weaker/stronger)? I think it is an important
>>>>>> thing to add.
>>>>>>
>>>>>>
>>>>>>  Binyamin
>>>>>>
>>>>>>
>>>>
>>>
>>
>